Poor Service and Feedback

I recently upgraded my cell contract. I dealt with Sudir from the Pietermaritzburg Liberty Mall branch. I informed Telkom Mobile in writing that the data charges on the old contract must be cancelled. this has not happened. I have tried contacting Sudir from the Pietermaritzburg Liberty Mall branch several times to rectify. His standard response is \ I am very busy as there are so many customers to deal with". He has not responded to my call or email for feedback."""