Very unhappy with service from Telkom

I am not happy with service received from TelkomSA. I called in to apply for a month to month sim card only, 5 days later I called in to cancel because network was very bad and I was told it is within cooling of period so when reading terms and conditions I was told that I will not be charged any fee for cancelling however telkom keeps debuting my account since September and its really frustrating me now and I have a friend that is still fighting telkom as well. I Spoke to Zimkitha and ref no : ***5A and was advised no charges please listen to that call. I've been calling to query that they keep telling me that I must wait 72 hours for assistance but still nothing.