If you have an unresolved complaint about a communications product or service we may be able to help.
As of 6:00pm on the 31st December 2025, consumers will no longer be able to register disputes about Upp Corporation Limited with our service. From 1st January 2026, you can contact the Communication and Internet Services Adjudication Scheme (CISAS) who may be able to help further. Call 020 7520 3814 or email cisas@cedr.com
We understand that complaints can be emotive and consumers who contact us may be angry or upset. We will always do our best to help. We also have a duty of care and ask that users of our service are polite to our colleagues. We will not tolerate any communication we deem to contain abusive language. You can read more about this on our Working Together page.
Creating your case online is the fastest way to get your information to us, however you can also do this by email, telephone and post.
You can also contact us via:
If you require additional support, process alterations or translation services please visit our Accessibility page for more information.
Please confirm the following in order to continue:
Ready to raise your dispute with us?