I am no longer in Germany. So my visa has already expired now. I flew to another country (my home country) several months ago. I didn't get the chance to cancel my ' registration ' in Germany. Because it was an urgent decision to go back. As of right now I only have my passport that has entry stamp. If there should be  more of a proof that im not in Germany. I could take a ' residency document ' from the city that I 'm living in. 

The biggest problem is that I have never used the tariff since November 2023. And I have been trying every other way to cancel it online but website of O2 always says 'The form could not be sent. Please try again later.' on the  https://info.o2online.de/kuendigung/  website. Please help me to resolve this problem

19.02.2024 10:17 o2_Katja: moved from Mobilfunkvertrag to english community