Moin Moin,

When did the contract start?

A normal contract has a runtime of 24 Month. Only if you have a flex in the name the contract could be end with in a month.

If you do not left Germany you have to do a Umzugsauftrag.

If you just cancel a 24 Month contract that you get quit at the end of the 24 month.

If you have left Germany read this: 

Thanks for your reply @schluej - my contract started on 15.06.2020, so that’s over 2 years. 

I am moving abroad but I don’t see why I need to provide any further documents since I already received confirmation of my contract cancellation.

Hope this unpleasant issue can be addressed as soon as possible, from other requests in this forum it looks like o2 does this quite often.

Hey @lltt 
Welcome to the o2 community!

I'm happy to take a look at your case. Please send your customer number and your four-digit personal customer code to @o2_Support . After that, please contact me again here :) 

Best regards,
Flo