MTN SA - POOR SERVICE

I have been trying to cancel a data contract since beginning of Dec-20. Three different people from retentions department has phoned me since to confirm the cancellation - the last being early in Jan-21. Simcard was cancelled, yet I am still paying the full amount of over R2 000pm (up from R700pm under contract) for the data, as it is now on a month-to-month. I have done numerous follow-ups since. The case has been escalated a multitude of times. I have been promised credits for what I paid since Nov-20 and still not sorted five month later. Icing on the cake - I just found out this morning that there is a new number (new contract) taken out in Somerset-West in March - a place I have never been to - on my account. So now having to deal with ***** as well, how long am I now going to have to pay for this contract until it gets sorted out....