Complain: Already cancelled contract from September 2025 but still getting the bill

First of all, I would like to say that I am very disappointed with O2 service. This is the worst customer service I have ever experienced.

I have complained several times since October about my contract and my bill, as O2 made a mistake. I have called several times and filled out a cancellation form multiple times.

I cancelled my phone and number contract on early September 2025, but somehow only the phone contract was cancelled and the number contract not. So I have 2 phone numbers now. I tried to call the customer service, and they said I had to send a written letter. I did that in October, but no answer until now. I called again and again, but still no answer and no solution. I called again last week, and they told me to fill a Sonderkündigungsform online. I did that, only to get a letter from O2 saying that they need my phone number. This does not make sense at all as I did everything online and O2 has my data!

This week have filled again the form and called the customer service, but NOTHING! This is very frustrating and I wasted hours of my life to try to contact the customer service to solve this problem!.

I would like this issue to be resolved immediately and ask that you do not bill me for the contract that I already canceled in September. I would also like a refund for the fees paid since October for the canceled contract. So please fix this and do not bill me again! This is very unprofessional and unreliable service.

Thank you very much and I look forward to your immediate resolution. 
edit o2_Solveig 05.02.2026, 16:29 verschoben von o2 Mobilfunk → English o2 Community