Telkom Still billing after cancellation of contrac

I filled in a form at Telkom Woodlands in Pretoria on October 16, 2015 as my contract was expiring November 11, 2016. I called the call center on the 27 January 2016 and spoke to Tony Venper who said she will get back to me . Now after a week of not hearing anything I get another bill from them. I call back and nobody answers my phone . Today alone Ive called 3 times and waiting 10 minutes each time for someone to pick up the phone but nobody does. <br> Ive left so many messages for her to call me back. Even went on online chat. Thank goodness I record all these things .