Contract Cancellation

I have an MTN contract which has expired in November 2020 and I have been trying to cancel the contract with no success. I have called the call center a number of times and no one answers. I even went as far as visiting the Cleawater MTN Branch and I requested assistance in canceling my contract. Do date still my contract hasn't been cancelled! To the point where yet another debit order has gone off because MTN has failed to cancel my contract. I sat for nearly an hour at the Clearwater Branch while a lady by the name of Cleopatra said she would call their call center and request that they cancel the contact. After having spent so much time at their branch the lady suggested that I leave as the call center wasn't answering and she would advise me as soon as she gets through and manages to cancel the contract. This was 2 weeks ago! Still today my contract has not been cancelled! Another debit order has gone off and I am highly annoyed! MTN makes it so easy to open a contract, however when it comes to cancelling it they would rather drag the process on in order to find an excuse to continue debiting your account as much as the 24 month contact period has lapsed which I find extremely underhanded and *********! I need this contact cancelled asap and also I am demanding that the debit order for January be reversed as I have been trying to cancel this contract with MTN however they have chosen to drag the process on!