Bad service

Good day. I need your assistance as I have been paying for fibre service with Afihost since 4 December with no internet. I have chatted to numerous agents over WhatsApp as well as telephonically with no success. Afrihost keeps escalating the matter to Vuma who installed the router and I wake up every morning, spend half my day chatting to agents. I am being billed for the service and now I am spending lots of money on prepaid data and I need the line connected for work. Your assistance will be much appreciated.