********** avccount messing up my credit record!!!!!!!!!

In November and December 2017 I was billed and debited by MTN for a contract account. I then contacted MTN after reversing the debit orders to enquire about the debits and was informed that there is a contract active. I informed MTN that the account is ********** and was requested to email an Affidavit and a copy of my ID. I sent these documents to Alice Vandermerwe on the 08/01/2018 where she advise me that she has stopped the debit orders and suspended the services as I did not even have the mobile number activated under my details. MTN has not debited my account since however, to my surprise, I receive a SMS to make an urgent payment of R21 054.77 for the ********** account A ********** . MTN stopped the debit order and handed me over which means that MTN is affecting my credit record and possible blacklist. CAN YOU PLEASE SORT THIS OUT AND CLEAR MY NAME AS I HAVE PROVIDED YOU WITH ALL THE REQUIRED DOCUMENTS AND WAS SUPPOSED TO HAVE CANCELLED THIS CONTRACT UNDER MY DETAILS. Clearly the person who took the contract with my ID is not me as you were supposed to verify ID upon producing an ID for identity purposes. How was this person given a contrat without verifying identification. If the package was delivered, obviously he/she was supposed to produce an ID and sign. I NEED MY NAME CLEARED AS SOON AS POSSIBLE AND CALL YOU COLLECTIONS TO STOP CALLING ME.