********** UPGRADE DONE ON MY ACCOUNT

I received an sms on the 7/10/2015 informing me that my upgrade was successful. I immediately contacted MTN *** to report that this what not me that did this upgrade, I did not authorise it. I called on the 8/10/2015 to find out what the progress was on this situation, I have contacted *** everyday since then, with different stories and have had 2 consultants put the telephone down in my ear!!! I have now been told that I have to go and get an Affidavit. FOR WHAT REASON MUST I DO THAT WHEN I PHONED IMMEDIATELY INFORMING MTN THAT I DID NOT DO OR AUTHORISE THIS UPGRADE. I went to the nearest MTN store to see if they would help and give me the Regional Manager's number, to be told that they are not allowed to give me the number, they would contact him on my behalf only to be told I have to do an Affidavit. Reference numbers received, Ref: ***, Request No.: ***, Ref: ***, ***. The consultants who put the phone down in my ear, I was not able to get their reference numbers. MTN YOUR SERVICE IS ABSOLUTELY PATHETIC!!!!!