Waterstone's handling of gift cards online certainly leaves a bit to be desired.
I attempted to use the remaining balance on a card in conjuction with a credit card for the balance to buy an ebook.
I mistyped my card's expiry date so the transaction failed but it still took the balance off my gift card. After much to-ing and fro-ing, I got it recredited, but you'd think their website would be coded so that a failed transaction doesn't affect the giftcard balance.
Still loving the Reader though despite these little glitches