Telkom - no customer service

Telkom has the worst customer service. My adsl line has barely been ever worked properly, my line has been completely down for the past 2 weeks. After numerous calls to them every tele tecnition has a different opinion of what is wrong. We even took our router to a telkom store and they could also not pinpoint the cause of the problem. We are still waiting for a technician but when we phone they inform us that the technician was sent out but we know for a fact that is a lie as no one has been to our house to try and establish what the problem might be. My wife works from home and with our internet down she cannot do what needs to be done and this is putting her work on the line. With all this in mind Telkom still bills us every month as it seems that they require their customers to pay for a service that they do not give.