MTN Poor disgusting service

My name is Doné Richards, I have been a customer of MTN for the last nearly two years. This is by far the worst service provider Ive ever dealt with in my life. I have been struggling to sort out my contract with them since last year. When I eventually managed to sort out payment I found out that the account was handed over to the legal department. Ive been going in and out of the branch, send numerous emails, eventually only now after months since last year November/December I managed to get hold of them. I could not access my invoices beacuse I wanted to see what I am billed for. When I recevied a statement I was billed for a contract that ended in January this month. When I queried the charges which is R1200,00 they advised me that I should ne sending them the proof that I have cancelled the contract with them. No one ever advsied me that this should be done in writing. So since November 2019 I have not been receiving any data, I am paying for a service that I do not get and on top of that they blocked both my numbers. I have now decided to get legal advise as this problem is escalating by the day. I am just not winning with them and the only thing I want to do is to pay these people and never do any business with them ever again.I will however not pay for a contract that was cancelled.Is there someone that can help me to resolve this issue please.