Bad Signal

I took out a Telkom mobile contract on the condition that I would have reasonable signal in my area, which I was assure by not only the sales people but from the heat maps on their web pages as well. When I reported bad signal in my house they called 3 times to confirm my address, but nothing has actually been done about fixing the problem. I have called the help desk 5 times and they have all put a note on the ticket asking them to get back to me, which they have not. I now have to maintain a Vodacom prepaid number as an \incoming line"so that they can call me. This is shocking service from Telkom mobile"