Ohh behave yourself. This is a massive company you are talking about, if it was a mistake they would have noticed anyway. And to be honest not asking them about it is really bloody unfair, its similar to when you accidentally give you someone too much money and they don't say anything. Wouldn't like it happening to you would you?
Just has this e-mail from amazon! I have pre ordered bf4 for £3 and it still shows as £3.
Hello, Due to a system error, you may have mistakenly been sent an e-mail in which you were told that you qualified for a promotional voucher for GBP 22.00, valid for ordering selected video games. We're sorry but you're not eligible for this promotion. We apologise for this error and any inconvenience it may have caused. We hope to see you again soon. Regards