Update: They very kindly refunded the extra orders – it would have been nice if they’d done it when we asked (and I hadn’t had to write this) but hey, you can’t really say fairer than that.
Oh dear, we were hoping that The Book Depository might be able to stand up to Amazon but alas no – misordering, dodgy records, double charging you and then expecting you to pay postage back (from Au to the UK for their mistakes!!!)… and as for customer support – a single line or so. So yeh, keep your custom with the big A I’m afraid.
Lets see if this posts helps any.