No service

I have had endless problems with Vodacom, for the past 2 weeks I have been trying to get them to fix the internet and all they say is they will provide FEEDBACK. For the last year I have asked them several times to install a booster for us, now they say they do not install boosters anymore, they installed one for our tennant about two months ago. They say I should buy my own booster but how can I if I cant work from home because the internet is pathetic and I cant teach online. I do not want FEEDBACK I want a SOLUTION. A permanent solution.