Really bad SERVICE and FOLLOW UP.

I have had a Vodacom cell no for many years. All of a sudden in the last year I have encountered bad or no signal at all, yet I am in line of site of one of the towers. I spoke to a consultant when I reported the problem who said there is a problem and they are working on it. He would send me a reference no, which I never got. This is a further 3 months down the line and it seems to be getting worse if that is even possible. I am thinking of changing my provider and no all together. They should not be called a service provider as they don't provide a SERVICE.