Telkom repeatedly not responding to multiple faults logged.

My landline and Wifi have been down for 2 and a half months now. I have logged 8 calls with Telkom and whenever I follow up they say that they are "sending a technician but can't say when". How can I resolve this? I am paying for a service that has not been operational for almost 3 months. When I have tried to escalate it at call centre level I was told it was not possible to escalate it. SHOCKING, shocking service!