unauthorized content services

I have been billed for more than 20 months now for content services, on average i am billed R190 on monthly bases for content services. I have been to a Vodacom branches more than 5 times to report the problem and get them to stop the billing as i do not give authorization as the person paying the bill, i have also called the customer service line more than 5 times but each and every month i am getting billed. The Sim card is in my Router all the times( 24 hours, 365 days per year) and yet i am getting billed through devices which are connected to the router. why is it that the person responsible for making the payments is not given the control to approve or dis-approve these transactions before they are given a go ahead? remember that the SIM card is inside the router the entire time. Vodacom really do care about the well being of their costumers because if they really cared they would allow the bill payer the right to authorize every transaction which goes through the account which gets paid on monthly bases. its time for change to a better service provider.