Amazon prime added to vodacom bill without consent

I received an sms from Vodacom informing me that I have activated prime video subscription and toy surprise also received 10 gigs of data from vodacom. Immediately called customer care to enquire about this and Vodacom tells me I need to take it up with Amazon prime. Whereas I do not even have an account with Amazon prime. I was on the phone with different consultant who all told me the same thing. I'm so furious with vodacom. How can they refer me to a third party Whereas I'm a vodacom client. 🚮