"unauthorized charge of $550.00 on my credit
card, which UA never bothered to call me about. How would you react to an unauthorized charge of $550 on your credit card? I am just curious. I am being quite patient with this, and I'd appreciate your understanding in return."
I don't know about Visa, but I talked with Amex and their position is UA will win the battle. Also Imrose is correct that UA's legal department is aware of the situation as are the brass high up. But I doubt that they will just refund the tickets by calling you and with out a "we are sorry" gift. We should all hear from UA early next week.