Pathetic telkom refusing to CANCEL CONTRACT

I cancelled my contract on the 10/05/2017. They have still not completed the cancellation and for the last 7 months they have being BILLING ME. I spoke to several call center agents and have sent through the cancellation form to a call center agent. His email address is ********** I sent this email on the 7/12/2017. He guaranteed me that he would call me back once he had the email and that it would be sent to the proper department for further investigation to date it has not been sent. I phoned one call center agent who dropped the phone on me and another call center agent Charmaine Mthempa who told me that she would get her team leader to call me back her team leader NOCHUL has still not called me back regarding this issue. To date they REFUSE to sort out this cancellation and REFUSE to call me back to discuss this matter. Telkom mobile have by far the worse ****en call center agents that dont give a **** about the customer. This pathetic disregard for the customer is infuriating and frustrating. It seems this is how they get their customers to remain on their contract IS TO DELAY OR NOT CANCEL THE CUSTOMERS CONTRACTS....