Putrid service received

At the end of February 2021, mTN had technical issues with deducting debit order. I proceeded to pay my account at the Zevenwagt store and the next day the debit order was deducted. I then reversed that debit order but still received emails requesting payment. I email customer care and their response time was putrid. I went to the store in Tygervalley and the assistant confirmed that my January debit order was not received. I proceeded to print and email my bank statement showing the debit order deduction. To date I have received no response from MTN and now my service has been cut. I have tried contacting the customer centre and to no avail.