mtn bad/no signal. Kempville Piet Retief

These past few months MTN signal has been lost and goes onto emergency calls only in Piet retief, mpumalanga, kempville to be specific. I am fed up of this it happens atleast 3 to 4 times a day and i miss so much of important calls, and i loose money when trading forex cause i cant close trades in time. Do something about this terrible network.