Mtn CLAIMS no payment received

MTN South Africa I am a cash customer and pay my account on 1st of the month. My payment is STILL NOT ALLOCATED and I have phoned, emailed, WhatsApped and the problem does not get sorted. On the 8th I spoke with a mtn consultant BAPHHILE CELE and emailed her the MTN email i received to thank me for my payment via Paygate as proof of payment. She was helpful and said the payment will be allocated within a couple of days. After 2 days, still showing outstanding and receiving smses at 00:15 at night while I am sleeping, stating I have not made payment, I called back and spoke with XOLELWA LINDINXIWA whom then also asked me to email my proof of payment to her, but she was not too helpful and just said the issue will be sorted and extended my "payment arrangements" so my line does not get suspended. Every time I get told the payment will be allocated in a couple of days....it is now 14th of the month...think it's time to let MTN go!!! I have been with MTN for many many years but the service has gone backwards! Mtn case number: REQ***.

PLEASE CAN SOMEONE HELP AND ALLOCATE MY PAYMENT?