You have to have a credit card on file with Tesla for using an SC?
Dispute every charge with your credit card company and provide the FUSC documentation as proof the charges are not valid.
I didn't need a card on file as my account originally had FUSC. It was the appearance of a balance on my account that led me to notice the feature was removed. Adding a card and paying the balance at this point would feel like acknowledging that what they did is acceptable. I respond to the Add A Credit Card/Pay Your Balance emails with the same arguments and screenshots I have been sending to support insisting it be corrected. As if I should need it I added another one to my latest email, the Pay Per Use policy on their legal page today still uses the January 15th as the starting date for paid supercharging and transfer limitations.