MTN prepaid query going on two months, not yet resolved.

I am on MTN pre-paid. I have purchased a Combo deal on the Mtn app on the 20th of August being 900 Any time minutes and data all valid for 30 days. Total cost was R350. R250 for the minutes and R100 for the data. I received the data but till today I never got the minutes nor a refund. I phoned the MTN call center the next day being the 21 st of August. I received a RAQ ref no. Since then I have pend hours on the phone to MTN including MTN head office . No the hours is not worth the money but it is not about the money it is about the principal. Not once have any body from MTN contacted me to resolve the issue. I had to constantly phone them. When I contacted MTN Head Office and asked who is the manager of the prepaid division, I was told it is a Mr. Vognqa Musa. I left him 3 messages on 3 different occasions he never returned my calls. When I enquired whether he received my messages I was informed that he advised that he does not deal with the public direct I had to phone the call center they have to escalate the query to him. Which I did, no return call as yet. I have heard on the radio that MTN share price is doing extremely well.. I have also heard of the amazing IT system they have. Yet they are unable to rectify a small amount of R250 timeously. Makes me wonder is the prepaid business not important to MTN. Are they really making the money or are they just taking funds from the prepaid business that nobody seem to be able to trace. It would be interesting to hear if there are other prepaid customers experiencing the same issues.