8ta bad signal and service

Struggling with signal. We relocated from centurion to krugersdorp. I had very good signal in centurion when I started the 8ta contract but since the move I have endless signal and data problems. I contacted the 8ta call centre for a solution where I eventually spoke to the manager who after a unproductive conversation told me that Its my problem that i relocated to krugersdorp, 8ta checks for good signal in the area where u apply for the contract. No solution was given. I do not see the point of a mobile device if i can only use it in a certain area then i might as well have app**** for a landline. I would appreciate it if 8ta can contact me and have this resolved. I think its unfair to pay for a contract which i most of the time cant use.