bad signal

it is almost a year that we have bad signal in our area.we have contact vodacom about the problem and all they can say is you need to get wi fi we don't have the money for wi fi there was nothing wrong with the signal and just one day the singal was gone.we have complained many times and still nothing had happened about it! please make a plan we stay outside the town on a farm if something happens we can't call for some help because we don't have signal!