Vodacom subscribed me without my authorization

Saturday I have app**** for a data contract, I receive an sms that says my Befit subscription has been deactivated. This subscription has been charging me R7 of my airtime per day and I was not aware all along. I would like Vodacom to send me my cellphone bill. I was always wondering why my airtime finished so quickly after recharging. Please pay me back my airtime, I still won’t recommend vodacom to others. Which is why I prefer using other providers in terms of calling. If this is not fixed and I don’t get answers I will be cancelling my contract soon