Scammers are so annoying, but the best way to get back at them is to completely waste their time. nKeep them on the hook without actually giving in to any of their demands - they'll keep trying to get what they want out of you at first, but will eventually come to a point of diminishing returns where they finally realize they're barking up the wrong tree and could've scammed 2-3 other people in the time you wasted.