No one can reverse transactions, your only hope it to have proof of the hack and contact an exchange when the coins go to one.
Do you know how you were hacked?
Can the exchange do anything about the hack if reported? I come across similar cases and I want to have information so as to be of help to the victims. I have always thought once the hack happens, nothing can be done about it.
If you have extreme proof that the coins we're part of a hack and the coins are sitting in the exchanges wallet, there is a chance they will freeze the funds.