Very disappointed!!!

I am very disappointed with the service we have received from Vodacom, we are struggling with cell phone signal where we live, it was fine when we moved here, and has since deteriorated a lot, we run a business from home, and it is difficult to take phone calls and walk around the house to see where you can find signal. We reported this to Vodacom in Feb 2018, and since then nothing has happened, only when I send another email inquiring what’s going on does a consultant phone me to tell me someone from the technical department will phone me, which they do after a day or to, to tell me that they are waiting for stock, as we were told they will come and install a booster in our house, which will boost the signal. This morning once again I was struggling to make a phone call and decided to follow up once again with Vodacom, only to receive a call earlier from a guy, that tells me on their side it "actually" shows we reported it in May 2018 (while I have an email from Vodacom with a reference number on the 6th of February 2018) and that they are aware of the problem in our area, and they will have to erect a cell phone tower to fix the problem, or we can BUY a booster system for our house, completely different story than what they have been telling us the hole time. I then told him maybe we should then try a different network seeing that they don't keep to what they say, and he says to me, o well I am sorry you feel that way, enjoy the rest of your day, goodbye... I was speechless... excellent service?!?!, we are obviously not important enough...