Called to report a restaurant with 4 locations for having a $10 minimum today. I gave my details, the merchants details and the rep asked me...
"What would you like VISA to do with the merchant, Sir?"
I told them to inform the merchant of their violation and asked if they had a fine for an offense like this, I'm on hold currently. I would have left them alone if they didn't print my full CC number on the merchant copy of the receipt.
EDIT: He wasn't sure about a fine but he said "Visa will defiantly take some action, Sir."
