MTN ***** department - USELESSS!!!

On Sunday 7 March 2021 (over a week ago), I recieved messages that an account had been opened in my name with MTN. I immediately contacted MTN and this was confirmed. I informed the consultant (Nobule) that this was ***** and to please immediately cancel/freeze the account. was informed that they cannot do this until 'I prove that is is *****'. This is ridiculous! I was told I need to send an affidavit and certified copy of ID. The following day, Monday 8 March 2021, I contacted MTN and spoke to consultant Mbali Khaba who gave me her email address where I forwarded an affidavit and ID copy. She recieved the documents and gave me reference number: ***. I informed her that I think it is ridiculous that I cannot cancel or freeze this account and she informed me that she can deactivate the number - which she subsequently did. It is now 16 March and when I call to find out the status, I am told it is still open. I was given a number for the ***** department ***) and was told to call customer care. It is completely unacceptable that 1: somebody can so easily open an account in my name at MTN, most especially since I already have an account. 2: I have to prove the account is not mine before it is cancelled, even though the amount will be debited off MY account. 3: it takes a week for MTN to attend to ***** matters - what if this was the debit order week? Can somebody please assist me with sorting out this matter.