HELP!
it depends on your bank, Cardno. THey will have blocked your card to protect your account. If the number on the back is for like 24 hour phone banking (like the Cooperative Bank for example) just phone them and they will unblock your card. This happened to me last time I was in Poland (but not other European countries!) ..apparently the thing to do is ideally phone your bank before u leave and tell them where you are going. Good luck, don't worry.....:)