MTN Committing ***** against my account, by adding a cell number for DATA in its Clearwater Mall Branch without my instruction

I have continuously called the MTN customer care line and logged a ***** against my account that occurred at the Clearwater Mall Branch as I was advised by the individual on the first call. My first call was logged on the 12th February 2021. I have done so and followed up at least 8 times since the first logging, every time they tell me that ***** department has been advised and the billing thereon will be stopped on my account. I have also logged three separate complaints with the MTN ***** line to which they reply that they will contact me within 3 working days and they never ever contact me. The data bundle account is still linked to my account and I am getting charged for it and nothing is being done about it. Also I was sent the application form originally that was filled in, this is when I phoned to advise of the *****, how can they accept an application form at a branch of theirs without a signature on it. This is then clearly ***** from a MTN employee. I have also sent an email to MTN's CEO and another executive and still to date nobody will attend to it. If you call their call centre they do not allow you to go through to anybody senior to assist either. Where to from here, maybe register it with SAP and get them to go to Clearwater and arrest their staff who were involved in the transaction. Please I need help on this.