Your beef is with Chase, not Marriott. I am surprised they would just decline the purchase as opposed to trying to call you. I have been called in the past, but I don't remember which company called. I typically try to notify the credit card company if I am travelling overseas, but you really should not have to. Unless it is written speciifcally in their terms with the card they have no right not processing the transaction. I would have asked them for where it says in writing you have to call them. If they couldn't produce it, I would have filed a complaint against them - or gone irrate on a supervisor demanding some type of freebie...:-)