MTN UNACCEPTABLE SERVICE, CALL CENTRE UNAVAILABLE

Upon speaking to a consultant about my MTN contract that had a problem with my billing info - I made arrangements to pay a certain amount on the date of the 20th. I even recieved the sms of the the arrangement. when the 20th came I paid in more then I arrange for. But by the 22nd I recieved sms that my service would be suspended. I ignored it but by the following day MTN suspended my contratct. I tried to contact the call centre but theyre sercvices has been disrupted so I cannot speak to any one. I then paid in the amount that they smsed me to pay - plus the full balance oustanding so that I Know that I wont have this problem again. But then today - my service gets suspended again - for the 3rd time this week and another amount that is outstanding was smsed. The call centre is still not working today so I cannot sort this problem out and I will not pay anmore since I paid the full amount outstanding that they provided me with.