Bad network coverage, slow internet and lack of urgency for customer support

I am still waiting for someone at vodacom to get back at me concerning the issue on no network coverage. I was told this matter was escalated, but still no response. I tried calling a number that I was provided at the store to report any concerns but there is no answer to that number. I really cannot be paying for no service, the network coverage is extremely poor no matter how many times I reset the router I was told my area has a good network coverage and that the high speed package I signed a contract for will work best. From day one I struggled with network coverage, speed is extremely slow. I cannot be paying much for no service. I a m really frustrated - this is the worst network I have ever experienced and what makes me more angry is that network is key for my work, I pay so much money for nothing and there is also a lack of urgency for the support.