NO service????

Vodacom

I am very dissatisfied with the service of Vodacom. We signed new contracts with Vodacom last November because the Vodacom tower is ±3km from us. But since we took out our contract, we have had no signal at all and after many attempts to bring the matter to Vodacom's attention, the case is just closed every time. I then went to the Vodacom store where they gave me an email address to complain to. After I have done this I am told by email to go and complain to the Vodacom store myself then they will handle the complaint on my behalf. But every month the debit order goes off for service (not delivered?)

Do I have no rights then? Should I just shut up and keep paying?