MTN customer service

I'm having a horrific experience with Matan Calton Centre and MTan online aupport. I paid for my MTN month to month internet instore for some reason my payement wasn't allocated to my profile ,till date it's been back and forth online gives me references everytime I call with no help in store they say they escalated not sure why because the payment appears on their systems I'm without internet the store manager doing nothing to help but payement is made in their store I have all the proof now it's pillar to post with money I paid for a service I'm not getting