Unable to receive and make calls-no sig

I moved to my new home on the 25th September 2015,Since I moved I do not get Network signal on either my mobile phone to make calls or data signal on my separate modem. I therefore cannot receive calls, make calls when I'm in my home. I need to go onto the road outside about 50m from my house to get signal. When there is signal, either roaming on MTN or Telkom, the calls drop.the call centre logged calls to technical department and after a lot of trouble shooting, they got a technician out to my place to test. 2 technicians, came out on two separate occasions and both found signal to be non-existent/extremely poor and unstable even though the \BASE Station is 500m"from my house. Officially this has been going since OCTOBER 10th 2015 to and including 28th January 2016. I keep calling but nothing. this is my wifes acc. but cannot use it as she works 80% of her time at home and needs her phone to do her work...<br> I am waiting 4 months for answer. oh the case was wrongly assigned again! I have been patient but for how much longer? Telkom cannot provide what they promised i.e. Service. Cancel this please and let me move on. CASE or call ref is: ***8. PLEASE!!!"""