They pretty much gone in full hiding. There are a couple of people who claimed to have contacted a lawfirm or even police in netherlands but heard nothing from them about the outcome. Stuff like that takes time and money, that's why if it's just a small amount, best choice is just to move on. And honestly there's always people like that everytime an exchange reveal its true colors, that's why I don't believe them unless there's a proof to support it