Telkom Bad service and charging for service that has not been installed

In May I app**** for a Teklom fibre service at R801 per month. I made follow ups to no luck. Till now the service has not been installed but Telkom has sent me a bill for R1901.04. I called to follow up but was told they are offline and should call in an hour. I called again and still not getting any answers. I am stuck, and dont know what else to do. BAD BAD BAD service.