When you state "I sourced the images" does that mean you obtained a license to use them? Just not having a website or taking down the site will not make this go away. You really should have gotten educated before" you contacted them, as you basically threw the ball on their side of the court, and they have already come back at you.. DO NOT speak with them, as if you are not educated you will likely tell them things they can use against you.. as far as your name and address, they probably pulled it form the domain whois info, which is likely outdated. Safe photos are either ones you create yourself, ones in the "public domain" ( not the same as royalty free!) , images that are availalbe via creative commons or images you obtain a license to use by purchasing them.