It always makes me chuckle when these people phone you and then ask YOU to confirm YOUR details “for security reasons”. I always insist that I won’t divulge that information until they’ve provided me with THEIR full name, date of birth and mother’s maiden name “for security reasons”. None of them want to play ball though. ;)
Don’t forget though, if they’ve phoned you, play with them for as long as possible, it’s their money their wasting.
Might be worthwhile asking the Daily Mail if they’re interested in running the story. They love this kind of thing, especially if most of the story’s already written for them.