Webafrica - daylight ******* is putting it mildly

Some six months ago, I bought a router and data package from Webafrica. After installing the router, I tried to connect my phone to the Wifi. It kept on saying the password is invalid even though I followed Webafrica's instructions, and used the pin/password on the back of the router. I have spoken to numerous consultants and no one has been able to solve the problem. I have asked several times for them to collect the router and refund the subscription money. But they ignore me. In the mean time, I pay R499 per month for nothing. The worst is that there is no way of contacting them expect on their stupid, useless whatsapp chat. On this chat, you can only talk to *********** consultants. When they did bother to phone me back, they promise me the sun and the moon, but all I get is a black hole. At this stage, I am extremely angry and feel totally helpless. This is daylight *******!