LMAO. create exchange. watch serious amount of funds come in in crypto coins. use excuse site got hacked. close site down. cash in on coins. What a way to rob people 
Nice idea, but no. If we rob people - why do we even refund anything? Why just don't run with all funds?Please post all logs here.
Hacker activity log from website.
Hacker message to you.
IP of hacker who sent message.
And logs of funds returned to people
If any have been returned.