Disgusting service from MTN South Africa

Earlier this year I tried to cancel my MTN contract as I was leaving South Africa and the contract still had another year to run. Due to COVID19 restrictions coming into place I unfortunately had to leave SA sooner than I envisioned. As soon as i arrived in UK I began the process of trying to cancel my MTN contract, which has proved impossible. I was advised to pay an amount of R4 022.59, which I did on May 27, 2020 into Absa Bank, Account number: *** for the estimated early cancellation fee of my cellphone.

I have since emailed the MTN Retentions Department numerous times, most recently a few weeks ago, supplying all the information and with relevant bank account number and details I'd paid an amount of outstanding money into. Once again, I've heard nothing and another amount of R479 has been taken off my bank account on July 31. I cannot afford to keep paying for something I no longer have. MTN you are *******!