Incorrect Migration done to Mobile Contract

I took out a mobile contract on 18/02/2016 in the Telkom Pavilion Store . Upon viewing my contract I noticed my FREE minutes were not correct & queried with the store. I was told that it will be corrected... Upon receiving my 1st bill I noticed it still wasn't corrected so I called in... 3 months after taking out this contract all seemed correct so I assumed it was all fixed.... UNTIL now... When I call/go to the store ti arrange an upgrade, cause I'm now in my 22 month, I am told that a MIGRATION was done in May 2016 (for what reason I have no idea, when the error was on Telkom's side initially) further extending my contract by 3 months. I had not agreed to this extention & was not told hereof. Isn't this ******* according to the CPA? I have since been to the store & called into the Billing & Customer Service Line but with no resolution thus far at all. I have subsequesntly lost out on some excellent "12 Deals" promotions simply because Telkom will not resolve. What will be done to compensate me for this?... I need answers NOW !!!