Terrible service

I have been contact cell c for over a week to obtain a letter confirming that my contract has been paid up. As always I was transfered from pillar to post with no assistance. At 1st i was given the incorrect number for the legal department and today the number i was given just rings and no one answers. I did an experian/credit credit only to find out that cell c has listed me for an account I have paid up on 20 March 2015. I have had enough, can someone please contact and give me the following:<br> <br> A letter confirming that my cell c contract has been paid and cancelled. Is this really too much to ask for?<br> <br> My cellphone number ***.<br>