My acct has an erroneous payment on it, too. But here's the weird part... I made two orders (and paid twice), but there is only one payment on my account bill. And, the item was 399 (64gig) each time, and the order total like 438 with tax each time, but the bill payment on my account is 427. I even called CS and printed off a payment history and both confirmed it just shows as a standard CC payment for 427, just one. Plus my card has only been charged for my two iPhone orders in the amount of 438 each, no 427 or third charge anywhere.
Bank error in my favor?