MTN accounts - SHOCKING service

On being issued with new credit card at end of May I advised MTN as my card was debited end month for my phone account. FIVE times since then I have given new credit card details - twice to the Call Centre and THREE times at MTN Hyde Park branch. After complaining to ICASA I was told to forward my card details YET AGAIN but with no person or email contact address. Once my account was even suspended. I have been told that MTN has a problem with the system ... for THREE months???? If MTN does not want to continue debiting amounts to credit cards why are they not upfront and come out with it directly. If this is not the issue - what is? and of course there is no way as a client I can get to speak directly to anybody in Accounts. Awful service