Thieving MTN

My monthly contract gives me 500 minutes airtime and 5GB data. In August I did not receive any data allocation. I purchased a 1GB bundle, of which the unused bundle expired at the end of the month. No airtime was received either and I used the my unused minutes during August. At the beginning of September, I received an SMS advising me that my account has been credit with 100 SMS's. A 100 SMS's for R550. The debit orders go off like magic.

I visited the MTN store in Canal Walk and advised that Head Office would be in contact with me and provided me with a reference number. Ten days later and no response. I phone 135 and spoke to Sthembiso (also provided a reference number and promised that he would get back to me within 24 hours. I was credited with some data and airtime in September 2020. But not the full amount that I was charged with. Suddenly this morning, 6 October 2020 my account is topped up with the normal allowance. But no one can explain the missing data and airtime or refund me for services not rendered, Absolutely pathetic service again by this service provider. I even tweeted on their time line last week and no response. They probably only display the complements and hide away the complaints.

What does one need to do to get the service that I have paid for?