***** at my cost

i have had an un capped data contract with mtn since 2011. i noticed that my data stopped working and called the call centre only to go around in circles. i then go to a mtn store on the bluff where i opened the particular contract and find out someone had **********ly upgraded my account to a phone contract. so i ask to see the upgrade documents because i did not upgrade. was told that it was not done in that store and they cannot tell me which store it was done in. the next day i go to the police station and cinplete an affidavit stating i did not upgrade and hand it to mtn. 8 days later i get a response saying that it is ***** but my account will still get debited for R9700 and i cannot get my original contract back. this is disgusting service and i have to suffer for mtn allowing someone to upgrade on my account. to make matters worse i cannot get my contract back.