Originally Posted by Pookeysgirl
I agree with Worldwalker. If you went to any store and bought an item and were charged twice because the cashier wasn't paying attention, do you then get credited the amount and given a second item? No. You're given a credit back to your card and you leave.
If the cashier says "I'm sorry; that won't go through," and re-bills you, the cashier can't bill you again and sneak an extra item into your cart. If she does, the second is a gift--you only authorized one payment.
In this case, Kobo owes her the free card--she authorized purchase of *one* card. If Kobo wanted to cancel the extra, they should've sent out an email saying "we accidentally sent you a second gift card, which won't work" rather than leaving it up to the person they charged to explain Kobo's glitch.