Im trying to buy some new threads online, and it wont let me,(doesnt say why, just says contact your bank) but I suspect its cause I didnt enter the issue date of my card, but how the fuck am I suppoed to know that? sure the expiry date, yeah, thats on the card, but the issue date isnt. And Ive never been asked that when Ive bought stuff online before...

Can anybodyz help please?
cheers.