Phone contract cancelation

In reason of the pandemic and ending of residence permit/

Now I cannot still come back to Germany. 
And since February I m leaving in another country.

My residence ended on 03.02.21

Could you please help me recalculate my bills and close the contract?

It seems I cannot come back to Germany in nearest Future.

I have all the needed proves such as a ticket, expired permit, and foreign registration.

edit o2_Manga: verschoben zu Englisch Mobile