Telkom don't com- municate

I have 2 mobile contacts with Telkom and been a customer for many years. All their call centre or enquiry numbers give you options to prompt your enquiry but none to directly speak to an agent. You must log a call back which takes days and when they call back, they check and tell you to book a call back in 7-14 working days because your debit order only apparently reflect after that period. In this way, your payment dispute is delayed because Telkom do not credit you for double deductions. Further to this, I just received my new invoice which again reflects a double deduction and no one seems to be able to explain why. Their walk in stores can't help you with accounts. They too just book call backs.