Paid for a Contract I did not use

Telkom was having problems deducting money from my account for a few months, I called the call centre and the consultant advise it's my bank stopping the deduction..I advised the consultant to put my account on hold, and not give ma anymore data, as I would first want my bank to allow the deductions every month...Instead of putting my account on hold the consultant stopped my contract completely I now have to pay out the contract and pay for a contract and data I used for 3 months only? Now my account reflect bad at the credit Bureau...For some consultant that did not listen correctly..I do not have date of time I called the call center but if the can check on all calls recorded between...I did not mind them reinstating the contract..