Mtn upgrated without my concent *****

MTN upgrated my contract without my consent. I have send documents via Three rivers branch to the ***** dept. But no luck. No one come back to me. Not sure where they got copy of my ID or my signature l. This is pathetic service from n huge company like MTN. PLEASE GET BACK TO ME *** IS MY CELL NO. MY EMAIL IS PLATINUMINCLINATION@ GMAIL.COM.