MTN

I was a good client for many year at MTN as a client with a contract, but last year my trouble started to be exact the 4th of September 2021. There was a Migration loaded to my account in a branch 1100km from where I am staying. It was done instore. On my account, It might have just been someone else account that hade more or less the same digest as my number but anyhow it was loaded to my account with out my consent or me knowing about it. Once my phone was blocked and I had to phone the service provider to unblock my phone the ladies said it was due to payments not been made to my account. Now I never missed any payment I have all my proof of payments. So this was wrong in all the ways there was. So she unblocked my phone and so it went till December 2021. I phoned twice the same day and the last lady said there was a Migration to on my account, So I said this can't be real I live 1100km form the area where this was requested. Surly I would have just gone to a branch closes to home if I wanted a Migration. I don't even know what it was till now. So I went to the store to get this resolved and yet no luck. Only email's and messages back and forth and no one seems to have an idea how to assist or how to do their jobs. I would love to cancel my account but unfortunately when I do it. It would mean that I am guilty which I'm not and they will black list me. They even have their lawyers phoning me 5 time a day to get a payment. Every time it is a different person they all say this message is being recorded for quality purposes etc., REALY now why should I repeat myself 5 times a day? I would love to sue them and cancel my account immediately. But what can I DO???