MTN South Africa (Cleawater Mall) incompetence and incorrect billing, coupled with unending calls being logged. Please cancel my contract with immediate effect.

I app**** for an MTN contract (Ref: ***) at Clearwater Mall (dealer code: 743606; store rep: Rosina Seboiboi: ***) on 22 April 2021, which was granted but I have ever since experienced a back and forth regarding the account which is not being billed properly. The data contract was for a 20GB day and 20GB night data at R229 per month. I was first billed R751.51 which MTN forcefully debited from my bank account and now they are talking R777 but still with no provision of data. I have been to the store numerous times and always being told about calls being logged and transfers from one system to the other. I took it upon myself today to go to the store and look for answers once more and the lady (Rosina Seboiboi: ***) still told me to give her chance as she is still going to log more calls. I cannot take this anymore and will never allow MTN to debit my bank account nor list me with credit bureaus. I went to the extent of reaching out to their office and the same lady indicated that I will not even be allowed in. This has been very frustrating and MTN will have to cancel my contract with no penalties whatsoever as they have failed to deliver the service purchased. As a law abiding citizen of this country I refuse to be taken for a ride and the law will have to take its coursed in this regard. I took out this contract as a way for assisting me as I'm working from home, but surely it did not do me any good. If someone from MTN head office can listen and assist in cancelling this contract, I will have eternal peace knowing that the imposed burden is off my shoulders. One cannot bare the brunt of *********** staff!!! Feel free to contact me on: ***