Cancelling a Telekom contract when moving abroad

Nice try and I could not do any better, my written german (and english) is appalling. But you definitely need someone to go over it a bit.

I haven't got enough time to do it at the moment, but I would suggest you copy the text and post it in the "Übersetzung korrekt?" section of Forum section of the LEO translation site here. You should have a perfect letter in under half an hour if the forum's running at it's usual breakneck pace!

You don't need to go into so much detail.