MTN poor service

It has been now 3 months and MTN did not allocate the money which I paid them om 17 June 2020. I have spoke to Nqobile, Nosipho, Sphelele, Sanelisiwe at customer services accounts. I have forwarded my payment reference number and bank statements. I have so many tickets. Everytime they assure me the funds will be allocated but still nothing shows on my MTN account that the money has been paid. This is so frustrating. I need assistance urgently