Where did the Signal Go...?

<p>Since November 2016 our area (Selection Park, Springs, Gauteng), there has been a drastic drop in Network Coverage. Before this we had no problem. I have been to our local Vodacom Shop to complain, and they lodged a complaint in the system, but nothing has happened to date. According to the Service Representative at the Vodacom Shop, there has been a lot of complaints. </p> <p>Why is nothing being done about this? We have almost no signal inside our home, and need to go outside to some point in the garden to make or receive phone calls.</p> <p>Can this be resolved as soon as possible, as it is a security risk not being able to make any calls inside the house!!</p>