OK mate,

You MUST talk to the police (please see my edit to the first post) Do not do anything without their say so..................your computer may well constitute a crime scene, and if you mess around, the perps will get off on a technicality

What equipment do you have, operating system, firewall, security software etc.

Remember, the "leak" might just have easily happened at the other end, rather on your kit.

Cheers

EDIT: Black cluster has a point, but I have had the same...........just think about the conversation.................they need NO information from you..............they SHOULD know it?

Mine was due to unusual purchasing patterns................and I generally use my "special" card for that sort of thing