No signal

According to the 8ta coverage website I should have signal in my house in richwood, I have next to no signal, every call I make the receiver can't hear me and then it drops. I spend +- R1000 a month with 8ta, unless the issue with my signal gets resolved in 1 (as I can't afford to be unreachable any longer) week I would like my contracts terminated. I have called the call center and their advise is to enable roaming, that was obviously the first thing I did, I have 1 bar of edge signal and sometimes as much as 3 bars of edge, so I don't kick over to MTN until I completely loose signal, I have a very busy phone and can't afford this type of unprofessional service, nor can my customers when I am unreachable. I have a R199 bundle which reaches R800 every month and a R199/10 gig data contract, I have been happy with 8ta until I bought a new house 1 month ago and am unable to connect to anything. My issues doesn't seem to be taken seriously and I don't have to time to phone everyone at telkom and hold for ages any longer.<br> Thanks<br> Chris