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If I'm reading you right, on this one your beef is with eBay. It's true that something is messed up at Hyatt with giftcards (and a lot of other IT stuff), but, from their standpoint, someone on eBay sold you a card that was already drained. I mean, who had the card before it was purchased for you? Who knows, right? Maybe eBay? Based on my experience (above) with Raise.com, it is Hyatt's fault. But the re-seller is the one who is responsible to you for the card you got. Push on them.