VODACOM *****ING MONEY FROM THEIR CUSTOMERS

By accident, I bought stuff on Google Play. I reversed the payments/purchases as to which Google Play confirmed the money was refunded back to the payment method which is stated in black and white that the payment method is VODACOM. I was still billed for the amount. When I phoned Vodacom, they simply told me to sort it out with Google Play. It's not their problem. I now still have the amount in arrears and still Vodacom is telling me "it's not their problem."