Vodacom content services

So tired of vodacom content services taking all my airtime. I haven't subscribed to anything, I cancel it but it just comes back and takes my airtime, takes numerous calls to the call centre to finally cancel it only for it to return in a few months. I want this service blocked permanently which is what the agent told me would happen last time I called customer care. Also no refunds for airtime lost at R10 day, absolutely ridiculous. I'm on a contract or i would just leave this ridiculous network