briefcase
Which company would you like to make a complaint about?

CISAS is not able to accept any complaints for Virgin Media Business or 02 Business (O2 Daisy) customers as they are being dealt with via the Communications Ombudsman. Therefore, if you are a business customer with less than 10 employees, please go to the Communications Ombudsman.

Connect It All Ltd Make a complaint
Brightstar Limited Make a complaint
Phonely Limited Make a complaint
O2 Make a complaint
Global 4 Communications Ltd Make a complaint
Bluetone Ltd Make a complaint
SCS Network Services Ltd Make a complaint
Yayzi Broadband Limited Make a complaint
Intelligent Exchanges Limited Make a complaint
Vorboss Ltd Make a complaint
SpaceTalk Make a complaint
Firehorse Group Limited Make a complaint
Septoo Limited Make a complaint
Celtic Mobile Make a complaint
Hibs Connect Make a complaint
Rovers Connect Make a complaint
Business Telco Limited Make a complaint
Pine Media Ltd Make a complaint
Premier Talk UK Ltd Make a complaint
Communication Limited ta C-STEM Make a complaint
Hadeda mobile Make a complaint
Dyfed Telecommunication Limited ta Shire Telecom Make a complaint
Dyfed Telecommunication Limited ta Dyfed Telecom Make a complaint
Northern Telecom TP Limited ta DMSL Make a complaint
YB Communications Limited trading as Northern Telecom Make a complaint
Northern Telecom TP Limited ta Toople Make a complaint
Clarity Telecom Ltd Make a complaint
Cader Networks Ltd Make a complaint
Zable Mobile Make a complaint
Green Colo Ltd Make a complaint
Tetralogic Ltd Make a complaint
Connexus Cloud Limited Make a complaint
Outline Communication Ltd Make a complaint
Mersey Fibre Limited Make a complaint
Boshhh Ltd Make a complaint
Virgin Media Make a complaint
Kijoma Solutions Ltd Make a complaint
Onestream Make a complaint
One Tek Business Solution Make a complaint
Will Wright Technical Services Limited Make a complaint
CRE Communications Ltd Make a complaint
Tetrabyte Ltd Make a complaint
WebMate Internet Services Limited Make a complaint
Simply Mobile (NI) Ltd Make a complaint
Gigs U.K. Ltd Make a complaint
TalkMobile Make a complaint
Puzzle Technology Ltd Make a complaint
Invew Telecom Ltd Make a complaint
Calma Technology Limited Make a complaint
Telecom2 Limited Make a complaint
Brdy Broadband LTD Make a complaint
Digital Fibre Connections Limited Make a complaint
Protect and Connect Ltd Make a complaint
Comms UK Ltd Make a complaint
The Primo Partnership Make a complaint
DSV Communications Ltd (The One Broadband) Make a complaint
Ikon ICT Limited Make a complaint
Yourcom Limited Make a complaint
BSG TELECOM LIMITED Make a complaint
Eclipse Broadband – Telecom Acquisitions Limited Make a complaint
Fleur Telecom – Telecom Acquisitions Limited Make a complaint
Home Telecom – Telecom Acquisitions Limited Make a complaint
Ice Telecommunications Ltd Make a complaint
Simtoroam Make a complaint
Vgtelco Make a complaint
The Very Good Telephone Company Ltd Make a complaint
Saturday Cloud Ltd Make a complaint
Hampshire Broadband Ltd Make a complaint
Telecom Acquisitions Limited Make a complaint
4G Mobiles and Data Ltd Make a complaint
ElemenTel Make a complaint
Perceptive 0n line Make a complaint
Brave New World Group Ltd Make a complaint
The Cent.re Group Limited Make a complaint
Zarro Communications Make a complaint
Zarro Broadband Make a complaint
AJRB Services Limited Make a complaint
Perceptive on line Make a complaint
Xifos Make a complaint
Compare Fibre Make a complaint
AAISP Make a complaint
Dunston Business Village Make a complaint
Bluebox Broadband Make a complaint
Vision Voice and Data Make a complaint
Acorn Networks Services Make a complaint
BusinessMovers.Tech Limited (BMT) Make a complaint
Virtual Landline Make a complaint
CTR Services Uk Make a complaint
CAT Sat Wales Make a complaint
Chess Telecom Make a complaint
Class Networks Make a complaint
All Inclusive Network Limited Make a complaint
Class Affinity Projects Ltd Make a complaint
Tiree Broadband Make a complaint
Allfour Technologies Ltd Make a complaint
LAN3 Limited Make a complaint
AIT Partnership Group Limited Make a complaint
Corona Corporate Solutions Make a complaint
AirFast Make a complaint
DPS Tech Limited Make a complaint
SiteHQ Make a complaint
YSH Managed Hosting Make a complaint
DG Technology Make a complaint
Digital Communications Make a complaint
Restore TV Make a complaint
Direct Voice and Data Make a complaint
Eclipse Wholesale Make a complaint
Equiinet Make a complaint
Switch Numbers Make a complaint
GCI Network Services Make a complaint
Airlinq Make a complaint
ServerHouse Make a complaint
Green Connect Make a complaint
Green WebHost Make a complaint
Honest Mobile Make a complaint
Intec Connections Make a complaint
Castle Telecom Make a complaint
Lister Unified Communications (Fieldtalk) Make a complaint
Beyond Connectivity Make a complaint
BIC Telecoms Make a complaint
Rade Systems Make a complaint
Rade Internet Make a complaint
Social Comms UK Ltd Make a complaint
Simple Telecoms Ltd Make a complaint
Smart IT Make a complaint
Spire Technology Group Make a complaint
SpaceX Make a complaint
Borders Online Limited Make a complaint
Storacall Technology Make a complaint
PhonePresence Make a complaint
Connect Make a complaint
Telcoinabox Make a complaint
4tech Make a complaint
Comms Connect Make a complaint
1GLOBAL Make a complaint
Truphone Make a complaint
Astaris Make a complaint
UKW (UK Wholesale Direct) Make a complaint
UK Wholesale (UK Wholesale Direct) Make a complaint
Lotus Telecom (UK Wholesale Direct) Make a complaint
Vision Telecom Solutions Make a complaint
Visional Media Limited Make a complaint
IP Base Make a complaint
WebeyeCMS Make a complaint
Symmetris Broadband Make a complaint
Zen Systems Ltd Make a complaint
Kuipertech Make a complaint
Ariel Online Services Make a complaint
Future Communications UK Make a complaint
Everfibre Make a complaint
Evernet Make a complaint
Evertalk Make a complaint
VoIP Yonder Make a complaint
Aloha Numbers Make a complaint
Callroute Make a complaint
Sipsynergy Limited Make a complaint
Pulse Fibre Ltd Make a complaint
Cobus Communications Group Make a complaint
Cobus Ltd Make a complaint
Tetraphones Make a complaint
JDMN Telecommunications LTD Make a complaint
NEC Group Venue Partnerships Make a complaint
Amplify Make a complaint
The Vox Make a complaint
The ICC Make a complaint
Arena Birmingham Make a complaint
Resorts World Arena Make a complaint
The NEC Group Make a complaint
Mirus Telephony Limited Make a complaint
Wells Fargo – WFBI – Ireland Make a complaint
Alncom Make a complaint
Talk247 Make a complaint
Barclay Communications Make a complaint
Barclay Digital Services Make a complaint
Vivi Voip Make a complaint
Love Voip Make a complaint
My Business Number Make a complaint
Number People Make a complaint
Spiffy Dog Make a complaint
Xtra Dog Training Make a complaint
Xtra Dog Design Make a complaint
Xtra Dog Academy Make a complaint
Xtra Dog Make a complaint
OrbitTech Make a complaint
Com Systems Make a complaint
OrbitTech Limited Make a complaint
Ingenious Make a complaint
RingCentral Make a complaint
Chase Communications Make a complaint
Engine Mobile Ltd Make a complaint
Jellyfish Technologies Ltd Make a complaint
Jellyfish Broadband Make a complaint
ParentShield Make a complaint
Unity CSP Ltd Make a complaint
Ingenious Ltd Make a complaint
Chaser Communications Ltd Make a complaint
GPS Telecoms Ltd Make a complaint
Convergence (Group Networks) Limited Make a complaint
RingCentral UK Ltd Make a complaint
Orbit Tech Make a complaint
SLICE MOBILE HOLDING COMPANY LIMITED Make a complaint
Barclay Digital Services Limited Make a complaint
Zarro Communications Make a complaint
Zarro Broadband Make a complaint
Softlink Computer Systems Ltd Make a complaint
White Tiger Group Limited Make a complaint
uno Communications Ltd Make a complaint
Mirus IT Solutions Limited Make a complaint
Advania UK Limited Make a complaint
Octaplus Supercharged LTD Make a complaint
The National Exhibition Centre Limited Make a complaint
UniverCell Make a complaint
Smart Connect Telecom Limited Make a complaint
Lascom Solutions Ltd Make a complaint
Communications Solutions UK Ltd Make a complaint
National Business Communications Ltd Make a complaint
Aloha Telecommunications Ltd Make a complaint
Russell Telecom Make a complaint
NOW Make a complaint
GoFibre Broadband Limited Make a complaint
Cirrus IT Services (UK) Limited Make a complaint
LILA Connect Limited Make a complaint
JMAM Enterprises Ltd Make a complaint
Vodafone Partner Services Make a complaint
Sky Business Make a complaint
Lycamobile Make a complaint
ASDA Mobile Make a complaint
Grain Connect Limited Make a complaint
Worktual Limited Make a complaint
Two Peas in a Pod Make a complaint
Unity World Ltd Make a complaint
TP Global Operations Limited Make a complaint
Touch Telecommunications Limited Make a complaint
Switch In Ltd Make a complaint
Smart IT Support Ltd Make a complaint
Rade New Media Limited Make a complaint
PBX Hosting Make a complaint
Newman Business Solutions Ltd (EE, o2,Vodafone, Gamma, Pragma, LG-Ericsson, Microsoft) Make a complaint
Network Sales and Solutions Limited Make a complaint
Natpoint Ltd Make a complaint
M-Tech Systems Ltd Make a complaint
Morgan Make a complaint
ITWiser Comms Ltd Make a complaint
IP Exchange Ltd Make a complaint
Honest Enterprises Make a complaint
HES Services NW Ltd Make a complaint
Globe Touch AB Make a complaint
Freestyle Communications Ltd Make a complaint
Force 36 Limited Make a complaint
Fluent2 Limited Make a complaint
Eden Telecom Make a complaint
Eclipse Telecom Networks Ltd Make a complaint
Digital Mobile Spectrum Limited Make a complaint
Datanet.co.uk Limited Make a complaint
CTR Communications Limited Make a complaint
Converj Ltd Make a complaint
Crystaline Solutions Limited Make a complaint
COM-TEL Telecom Ltd Make a complaint
Computer And Network Consultants Ltd Make a complaint
Bleckfield Ltd Make a complaint
4th Utility Holdings Limited Make a complaint
1823 Group Limited Make a complaint
South East Business Systems Ltd (SEBS IT) Make a complaint
ChunkyChips.net Ltd Make a complaint
Direct Telecommunication Systems Limited Make a complaint
Home Unity Ltd Make a complaint
Data Consulting Services Ltd Make a complaint
Accelerator Limited Make a complaint
Broadband NI Make a complaint
Aurora Managed Services Make a complaint
HII Communications Ltd Make a complaint
Earth Broadband Make a complaint
Mouse UK Limited (Telecommunication Services) Make a complaint
Roebuck Communications Ltd Make a complaint
Inspire Telecom Limited Make a complaint
Flexspace No1 LLP Make a complaint
Bespoke Telephony Solutions Limited Make a complaint
Zarro Make a complaint
Oricom Ltd Make a complaint
Contedia Limited Make a complaint
Code Technology Limited Make a complaint
Kane Cloud Communications Ltd Make a complaint
.Gower Coast IT Solutions LTD (GC Broadband) Make a complaint
SCUKCO Ltd Make a complaint
Amvia Make a complaint
Firstcom Europe Ltd Make a complaint
Primary PC Solutions Make a complaint
Skyline Networks and Consultancy Ltd Make a complaint
4G Mobiles & Data Ltd Make a complaint
Sitech Solutions Limited Make a complaint
Commworx Ltd Make a complaint
PSX Digital Ltd Make a complaint
Green ISP Make a complaint
Starlink Internet Services Limited Make a complaint
Terahost Ltd Make a complaint
Digisolutions Ltd Make a complaint
Gold Connections Ltd Make a complaint
To The Moon Mobile Limited Make a complaint
Comvista Networks Limited Make a complaint
Softlink Computer Systems Ltd Make a complaint
Northsat Limited Make a complaint
MMS Comms Ltd Make a complaint
Virtually Local Ltd Make a complaint
Unchained ISP Limited Make a complaint
Imperial Telecom Limited Make a complaint
HeyBroadband Limited Make a complaint
Computer Systems UK Ltd Make a complaint
Crockham Hill CIC Make a complaint
Vodafone Make a complaint
Clear Picture Services Limited Make a complaint
Internet For Business Ltd Make a complaint
Javelin Broadband Ltd Make a complaint
Fractal Telecom Services Limited Make a complaint
GPS Telecom Limited Make a complaint
Locallnet Ltd Make a complaint
NetConnex Broadband Ltd Make a complaint
Ryedale Communications LLP Make a complaint
Borders Online Ltd Make a complaint
Stripe 21 Group Limited Make a complaint
TwentyFirst Century Network Solutions Ltd Make a complaint
UK Wholesale Direct Make a complaint
Briskona Ltd Make a complaint
BusinessMovers. Tech Limited Make a complaint
Chess ICT Limited Make a complaint
CATalyst Systems North Wales Ltd Make a complaint
Camping Connect Make a complaint
Buzz Networks Limited Make a complaint
Burstfire Networks Ltd Make a complaint
Britannic Technologies Make a complaint
Brighter Bills Make a complaint
Bongo IT Make a complaint
Beeline Broadband Ltd Make a complaint
Babble Cloud Make a complaint
Atom IP Ltd Make a complaint
Aspen Solutions Ltd Make a complaint
Andrews & Arnold Ltd Make a complaint
Amatis Networks Make a complaint
X2 Communications Ltd Make a complaint
X-on Health Ltd Make a complaint
Webeye Ltd Make a complaint
Wavenet Limited Make a complaint
V12 Telecom Ltd Make a complaint
VPW Systems (UK) Ltd Make a complaint
Vision Mobile UK Ltd Make a complaint
Virtual Talk Limited Make a complaint
Vaioni Group Ltd Make a complaint
Truespeed Communications Ltd Make a complaint
Transparent Telecom Limited Make a complaint
TIC (The Independent Choice) Ltd (Telecommunications) Make a complaint
The Cellphone Store Limited Make a complaint
The Networking People (TNP) Ltd Make a complaint
Telecom2 Ltd Make a complaint
Tela Technology Limited Make a complaint
Techsapiens Ltd Make a complaint
Spire Business Communications Ltd Make a complaint
Speedster-IT Ltd Make a complaint
Simple Telecommunications Ltd Make a complaint
Save9 Ltd Make a complaint
Red Dragon I.T. Limited Make a complaint
Razorblue Ltd Make a complaint
Prime Connect Ltd Make a complaint
Probado Limited Make a complaint
POP Telecom Make a complaint
Phase 5 Communications Ltd Make a complaint
Peak Telecom UK Limited Make a complaint
Onecom Make a complaint
Network Fusion LLP (Fusion Voice and Data) Make a complaint
Netmatters Limited Make a complaint
Metranet Communications Ltd Make a complaint
Method B Ltd Make a complaint
Merula Limited Make a complaint
Lothian Broadband Networks Limited Make a complaint
Lister Communications Ltd Make a complaint
Lansalot Ltd Make a complaint
Lanonyx Telecom Ltd (Voxcloud) Make a complaint
L A Comms Ltd Make a complaint
Kube Networks Ltd Make a complaint
KSM Communications Ltd Make a complaint
Komputrade Ltd Make a complaint
Jaguar Telecom Ltd Make a complaint
ITG Ltd Make a complaint
IT Clinic London Ltd Make a complaint
Invoco Ltd (Telecom) Make a complaint
Wispire Ltd Make a complaint
Internet Connections Ltd Make a complaint
Intercity Technology Limited Make a complaint
Integrated Business Telecommunications Ltd Make a complaint
Integrated Network Services Ltd Make a complaint
Immervox Limited Make a complaint
ICT Studio Limited Make a complaint
Kuiper Technology Limited Make a complaint
Hotsplots GmbH Make a complaint
Helpline Limited Make a complaint
Nasstar Limited Make a complaint
Fuse Telecom Make a complaint
F One Technologies Ltd Make a complaint
Eze Talk Ltd Make a complaint
Exponential-e Make a complaint
Dualtone Communications Ltd Make a complaint
Dunedin IT Make a complaint
Dark Group Ltd Make a complaint
Cornerstone Business Solutions Ltd Make a complaint
Convergence (Group Networks) Ltd Make a complaint
Compatibility Limited Make a complaint
Comms Unite Limited Make a complaint
Cloud Phone Company Ltd Make a complaint
Clarion Communication Management Ltd Make a complaint
Citrus Telecommunications Ltd Make a complaint
Claranet Limited Make a complaint
VoxVibe.ai Make a complaint
Zen Internet Limited Make a complaint
Rise Fibre Make a complaint
Your Comm Scotland Make a complaint
VoxConnect.io Make a complaint
Revolut Make a complaint
iTalk Affiliate Telecommunications Ltd Make a complaint
Skye Kloud Communications  Make a complaint
NCS Office Systems Scotland Ltd Make a complaint
Tide Make a complaint
Sky Make a complaint
TalkTalk Group (including Shell Energy Broadband) Make a complaint
Pinwheel Make a complaint
Biker Mobile Make a complaint
Viber Media Make a complaint
We Are One 1 Limited Make a complaint
Simwood eSMS Limited Make a complaint
Ml Services (Sussex) LTD Make a complaint
Lime Enterprise Limited Make a complaint
Olilo UK & Ireland Ltd Make a complaint
SCCI Alphatrack Ltd Make a complaint
Send Telecoms Group LTD Make a complaint
Rewild Communications Ltd Make a complaint
IT4Automation Make a complaint
Ucall Telecom Ltd Make a complaint
Connect Managed Services (UK) Limited Make a complaint
Longworths Holdings UK Limited Make a complaint
Connection Technologies Ltdct Managed Services (UK) Limited Make a complaint