This is a shockingly immense amount! With losses of this scale law enforcement should be engaged.
This is the very reason why new exchanges should be treated with extreme caution. Sending coins to their hot wallets is playing Russian roulette. I have seen a few new ANN threads inviting people to sign up and well, obviously, send them coins.
But your post is a shocker. These are amounts which equate to a lifetime of savings for some people. I would be extremely angry and might even need psychological help if they (or anyone for that matter) stole this much money from me.