APALLING NON SERVICE from MTN

At present I wouldn't even rate MTN with one star. Towards the end of May my service was suspended, (at the height of the pandemic I had to go into a store to try and sort it our as I couldn't even call MTN enquiries) Falling in the "vulnerable category" I was totally freaked; I had no hone - my lifeline, and then I had to wait in a mall for at least 30 minutes waiting for someone ton help. Eventually someone poked their head out of the door (despite there only being one person in the store I was still not allowed in) Eventually I discovered that for some reason my monthly debit had not gone off. I then emailed MTN giving a different account no for the debit order. Next month and the month after same story. No one from MTN has ever bothered to come back to me. In August I discovered I was billed double my normal deduction plus an extra R20. No communication at all from MTN. I have been to MTN stores who have submitted my proof of payments to ? who knows as it has made no difference. I have phoned MTN accounts help line who insist it's all sorted. I phoned MTN help where I get a different person on the line each time. When I queried the double deduction with MTN century city they told me that MTN doesn't refund money, they will credit your account the following month. Of course this hasn't happened. I am ready to SCREAM with frustration and anger !!!!!!!!!!! The last person I spoke to said MTN was moving to a new system so my payments didn't register,. I've now been told to wait five days to see if anything comes of my latest phone call. If anyone has any suggestions or clout with MTN I would welcome suggestions. MTN don't give a damn,, they have their money, you are locked into a contract so why must they worry.