Unauthorized services charged above capped amount

I bought a new contract from Vodacom. I was assusred that my account will be capped by R50. Two months into the contract there is a R1946 charge for Google services. I called many times to query this as I have never subscribed. The Customer Care and Billing Department led me through a list to check and unsubscribe but none was found. Following month a charge of R2300. Many calls and same process followed. I even had someone else follow the process with them. Finally got a call logged with Google. Outcome was that I apparantly subscribed to stream services!! I never did. I capped the account for a reason. Now informed that I must try to ge a refund from Google. No assistance and cap is a joke