English - o2 contract cancellation

Hello,

I would like to know the status of my cancellation process.  I sent a mail (traditional post/mail) 10 days ago (I was told to do it at least 30 days before the desired cancellation date) and I haven't get any reply from your offices.

I'm leaving the country at the end of october so I really need to know how is the process going.

Could somebody please help me?

My Kundennummer is DE15698540

Thanks in advance, Regards

- Miguel