Non authorized billing

I keep getting billed for Vodafone Live value added services, yet did not approve or apply for it. This is nothing else but "*****". I cannot be expected to check my account every month for ********** VAS fees and then have to contact Vodacom. Give me the opt out button. For someone who "invented" please-call-me, it should not be rocket science.

Yours truly- beyond ****ed-off. ps (one star given as none is not an option)