Vodacom worst company ever highly disappointed

So please assist me. After no joy with vodacom I've decided to cancel my service on the 31st July after never receiving the service. My account was still debited and no refund has been received. And I have not been updated on my cancelation. I'm truely shocked how a company like vodacom can have no regard for its customers. Customer service is non existence. Please update me so I can get my money back and be rid of this pathetic service thank you. Jonathan stanford