CANNOT ROAM ON MTN.CONTRACT.NO NETWORK.

I took out unlimited contract with telkom. I then had problems as there is no signal in area that i live. Also no signal in nearby towns. After numerous calls i was told that i must put my phone on roaming and select mtn. The problem was somewhat resolved as i had to continually select network manually but at least i could make/receive calls and use data etc. However in the last week or more i have no signal. I cannot roam on mtn anymore. I have selected telkom roaming but still no success. I am paying 700.00 per month for a contract that is not working. PLEASE PEOPLE STAY AWAY FROM TELKOM NO MATTER HOW ATTRACTIVE THE OFFER MAY SEEM. I have exhausted myself trying to sort out this problem. I was once told that they will put a tower in my area Westering but that never happened. I am paying for something i cannot use. I had to take out contract with mtn due to not having a working mobile fone when home and travelling. Can someone advise? Is there anyone experiencing same problem? My no ***