Pathetic service

I recently cancelled my MTN contract and had my number ported to another network. From the day I ported (2016/04/10) I requested a settlement amount from MTN. After numerous phone calls, visits to the MTN service centres in Brooklyn Design Square, Menlyn and Centurion and tons of emails to MTN customer service I still have not received an answer. Matamela Rat****anda from Retentions emailed on the 15th April with Ref nr ***4 informing me that my call has been escalated to a supervisor. All I want is the amount that I need to settle my account. I am not asking you for money, in fact I want to give you some of mine. If you say that I don't owe you anything then it is fine, just confirm with me in writing and I will get off your nuts with this issue, but not getting any feedback is freaking annoying. To date, I am still waiting for any sort of correspondence from this so called supervisor. The level of incompetence and lack of urgency to help a customer from MTN is unbelievable. MTN has gone from the best cellular provider in the country to become the worst. It is no surprise that the subscriber base is shrinking by the day. The other issue is that there is no other number besides the customer 'don't care' numbers that a customer can call. There is absolutely no way of contacting the Retentions or Cancellations departments besides email to which they NEVER respond. #Retards