MTN Contract poor services (Advice not to take MTN contract)

I have bought the 2 following contracts from MTN over the phone call on the 11th of July 2018.

Huawei P8 Lite 2017 on MTN Made For Me S @ R169 x 24 months - Deal Code: *** CT2229

NO PHONE On DATA 2GB @ 89 x 24 months - Deal Code: *** CT5

MTN advised to send the device to my address with the hard copy of the contract document and the contract was never sent. I phone them upon the collection of the parcel from the courier agent. They said the will email the contract, I accepted the parcel and the contract never emailed. Then after that I have experienced incorrect billing and incorrect benefits were loaded. When I phone MTN customer care they kept to confusing me telling different stories each time I call. It took more than 12 months for them to admit that they have captured the packages I have bought incorrect in their system, after i have requested an audio when they sell the contract. I knew that after constantly travelling to send my complaints at MTN Head Office in Port Elizabeth. MTN admitted that they captured the wrong packages on their system and the error were not reversible and i kept on paying a bill which was almost doubled and benefits I was receiving were incorrect. not what we have agreed upon over the phone.

In August 2019 MTN advised me that they will make migration to the correct packages i have bought and will be responsible for the costs. Cost for the errors they have done themselves. After migration was done. Again they made something wrong. Benefits were changing every month and bill more high this time around. Ok the paid for the cost for unsuccessful migration. And still no solutions for the contract. Then they corrected the benefits but the bill reflecting on the invoices was still very high and could not afford to handle. I went to the MTN Head Office again in Port Elizabeth and told me they will have a discussion and revert back to me through a telephone call. A day later in November 2019 MTN called me to advise that the only solution with this regard was to make an upgrade in which they will grant no additional benefit and costs. The purpose of upgrade was to correct a bill. I have approved an upgrade they proposed under these conditions: 1. At the end of the original contract 11 Jul 2020 I will terminate the contract at no additional cost. 2. The length of the original contract must not be changed and I am intending to end all the contracts I have on the 11 July 2020.

Throughout the telephone call I agreed under the above 2 conditions. They even added and advised that by 11 July 2020 I can easily call MTN Customer care to end. " The contract was supposed to be ended by 11 July 2020 and MTN is still invoicing. I contacted them to cancel the contract was expired. They informed me to pay for the cancellation fee, upgrade will end by November 2021. Again this is not what we have agreed upon. MTN Customer Care is not helpful with this case. They keep on sending me left and right to wrong departments they say their system does not allow them to cancel the contract as they promised. And even to day they invoice.