"it turned out the last four digits and the expiry date matched the card on my Amazon account."
I checked, and Amazon does indeed only show you the last 4 digits and expiry date.
And if you read my post carefully I'm not saying that they did :)
"it turned out the last four digits and the expiry date matched the card on my Amazon account."
I checked, and Amazon does indeed only show you the last 4 digits and expiry date.