No signal and no feedback

I am very unhappy with the signal issue I am experiencing while using telkom mobile!!! I have 3 contracts with telkom and have virtually no signal where i stay.. in the middle of town. I was never informed that I should first make sure there is coverage in my area, in December they sent a technician out who reported back that there was hardly any signal and so far nothing has been said about a solution to the problem. I don't want the contacts if I am not able to use the devices while I'm at home. That's when we use them. I have recently followed up with telkom and they said someone would phone me back. I have still not received a response. No signal.... in an urban area.... really??? It's pathetic!!