Poor service and signal

Im a long time Vodacom customer with a very expensive bill that i pay every month! i called the call center 2 weeks ago and complained that i have got virtually no signal at home they asked me for 5 affected cell numbers, i gave them more than 7!!! i was told they would escalate and i would hear back in a week, they called in a week to tell me that my device is not compatible... i have S8, Nokia, 3 different generation modems, and an Iphone 7 that all dont connect? when i said that i would move my contracts to another provider they didn't seem to bothered. i have all the calls recorded should anybody want them. i dont see why a company the size of vodacom cant get signal to a little hill right next to Bedfordview, im surrounded by towers and everybody that has any other network gets great signal. why is it so hard to pay for a service and then receive it from a provider? why is it that i pay you every month on time and in full when i receive not even half a service does this not breach contract? does this not fit into the consumer act somewhere? why does a person always need to know somebody that works inside a company to get something done??? please please with tears in my eyes can somebody get back to me with action steps