TELKOM EVENT BILLING USAGE NIGHTMARE

I am so feed up with Telkom. I have 4 lines with them and on two lines I have been charged for Event Billing Usage which I have no idea why and how. This has been going on for 5 months now. In this touch economic climate, I can't be paying almost R300 a month for something I did not use. I feel it's as if TELKOM wants customers to default on their debit orders so that can can get more money by charging us. Please assist me as I have no where to turn to. I called all their contact numbers and is not given an option to speak to a consultant. There is no email for their complaints department.