Still being billed for a contract that expired in July 2020.

Probably my fourth review, no reply. Have contacted the relevant departments, no reply. In may of 2020 I requested that my contract be cancelled upon expiry which was in July. I am still being billed for said contract. Cancellation processing only took place in December of 2020 and yet I am STILL BEING BILLED FOR AN EXPIRED CONTRACT. MTN have continued to debit my account past contract expiry even though I had received telephonic confirmation that the contract had been cancelled in June. Waiting for MTN to reimburse me, however every time I follow up, NO REPLY. Every time I phone they escalate it to whichever department. Not a single employee that I have spoken to have taken any sort of responsibility and have simply directed me to the next person. Shocking.