Incompetence squared

I entered into a MyMTNChoice contract on 13 January 2018 at Jacqueline Mall branch which should give me day and night data. I have yet (almost 6 months later) to get the allocated night data despite since February : 4 calls to Jacqueline Mall store, 2 visits to another store, a visit to the Rivonia store, countless calls to the call center which supposedly escalates the matter and where a supervisor will supposedly call me back, emailing the contract to some individuals, a complaint logged on the website and various text messages from MTN advising the matter has been resolved. I even visited Jacqueline Mall store when the call centre said I must go there to get the activation codes and sent to them. The store did not know what that is and when I then called the call centre they wanted to speak to the store (so I have to drive to the store to get the store to speak to MTN). I do not know what they discussed but it has also come to nothing. So MTN is in BREACH OF CONTRACT, UNABLE AND UNWILLING TO FIX A MISTAKE but collects the fee from me every month. Is there any person at MTN willing and able to assist? What about a refund for making me pay for a service you do not deliver. My experience has been " Incompetence in the extreme !!!"