Incorrect billing /misinformation on expired contr

At the end of November I called the customer contact centre for telkom mobile. Firstly their service is repulsive and unhelpful. I called to report that my billing on my account was incorrect as there was an amount billed for an add-on recurring Internet bundle which was not requested. I requested to have it cancelled and for the amount to be cleared off my account. They tried to contact me twice in one day before closing the case that was logged stating that they were unable to reach me. I have spoke to numerous consultants- Sma Ngcobo on the 14th of December, Noble Thusini (\manager") on the 16th of December"