someone posted pics of my kids!! please help

Can someone please help who works for the website. I used to chat on chat called moco I dated a few guys now I have a bf. And someone put my info on here I moved had to change my number, my fb and they put a price on the reviews they made which is supposedly against the rules. And they posted pics of my kids in a members only thread that they stole from fb of course now everything is completely private. I've even tried just giving in to try and meet this asshole but they won't. Nd today I checked the thread and they posted pics of my little sister who's baby just past away. Its not even a review they're just trashing me can someone please help me!!! I'm calling the crimes against children organization in the am. But who knows how long its gonna take them to do something so many horrible people are getting away with this I know I'm not the only one but if someone can please help me I would appreciate it. Even if you can't thanks for trying. The threads are under my old moco user names cinnabunzz and wifebeater.