Worst Service ever received #*********** staff # query un resolved

I have a cellphone contract with Intellicell. I get billed every month for services which I am unable to use. My calls are barred... unable to receive any service. Called the customer service, they advised me that the sim card might be damaged. I bought a new sim card, did the sim swap, but still no service. To date I have not received any feedback from them as to what the status of my query is. Everytime I call they are either off line or they will check and log the fault with Vodacom. I contacted Vodacom... They too are unable to assist. What do I do now??? I pay alot of money for no service, even tried to escalate the query but no one can assist...