The exchange did not take the money. Where is it written that they stole something from him? Show exactly where it is written that the exchange stole his money. We are talking about blocking his account and while it is a temporary blocking, until all the consequences are eliminated. Read this topic, read the posts of this user, look at his behavior. Nothing strange?
So they started hiring shills to defend themselves? Start posting from your real account. Nothing seems strange in his behavior. He's a naive victim of your full-fledged scam.
We gave all explanations to the client as well, we suggested a few ways to solve this situation, but he refused. He threatens, abuses our staff and publish slander that has nothing to do with reality. Such behavior is illegal itself, it broke User Agreement as well local legislation too, this is a true SCAM. We also consider connivance of the bitcointalk administration in such questions - inappropriate.
ICO's don't really outlaw the general terms and conditions of consumer protection. Did he sign any contracts with you? Nope. Give his money back. Not like your shitcoin had intentions of doing anything apart from the pump and dump schemes to deceive the community. We know how things work.