Unacceptable service

Been struggling with my land line since december with constand down time, line dead. Two weeks back again, consultant arrived rerouted and got exchange to change. Then again this week, reported. Recieved a call to indicate consultant would arrive, never dis, the recieved call this afternoon tonsay line been cut again and telkom will not be replacing. Offered wireless line, which Ive indicated several times over the years I will not use as it only has one unit. Since when is the service provider not willing to repair what is not the clients fault. Breakers get ****** and Eskom / City power just doesnt replace? This is unacceptable. Requested a manager call me and nothing. Seeking urgent resolve.