Telkom Disregard and dishonesty

<p>I recently discovered that I was being billed for calls that I did not make on my telkom invoice. I went to the Telkom Mobile store in cavendish square were I explained the issue. I contacted the call center in store to state my case and was told that it would be resolved within 72 working hours. That was on the 14 June and no one from Telkom has gotten back to me. Yesterday The agent that I spoke to simply told me that the matter is still open as if it was OK that they had not gotten back to me in the stated time. Also I requested on the same day (14 June) that my sim card be cancelled so that the person who was using my number would not have access to it any longer. It turns out that the people at Telkom did not cancell my sim card even though I expressly asked them to do so and thus more calls have been made on my sim card. I have contacted the call center and they tell me that my sim card cannot be cancelled and that I will still have to pay for these amounts at month end. Who must I speak to in order to get this issue resolved</p>