So sick of been an mtn customer

I am so frustrated with the service at mtn. You cannot go in store to sort out your contract you must call customer care etc yet they cannot help you. I have been trying to close one of my contracts and it's just been a nightmare. Everytime a call no one can help but they don't mind collecting my money every month. So 1 of my contracts has come to an end I do not want to renew it. After paying and calling I have been told by Natalie in retentions that they cannot help me cause the person I called on the 22.11.21 logged it without they details to be traced and now it's stuck in pending and I am left having to pay another month. Can I be forced to have a contract I no longer want and no one in the call centre can help. Natalie has tried to assist but because of someone else's mistake she is unable to. First and foremost he gave me the wrong information so he clearly needs training and I refuse to be penaltised for an employees mistake. Train the people properly as its not my responsibility to know how an mtn employee suppose to do their job.

Can anyone help me take further action. Cause I always get stuck payi g extra with mtn hence why I had to stop paying via debit order as they would just debit whatever amount they felt like and say I used extra data on a contract that didn't allow the use of more data after depletion of monthly data. Can mtn stop this behavior!!!!!!!