Has my 02 postpaid contract been terminated successfully?

Dear 02 team,

I had sent my Kuendigung in December last year, a week before I leave Germany (11/12/2015).

I only sent a week before I left because Buergertamt need more letters than I expected so the process to terminate the contract was delayed.

Please let me know as soon as possible.

I thank you in advance,

Here is my phone number: 017xxxxx

NAHA