MEW is the best wallet for ERC-20 based tokens and ethereum. Here the entire responsibility is in hands of the user as he holds the private key. Here truly MEW cannot do anything with this hack or stolen funds. You could've missed the private key somewhere else which seems to be the reason for loss of funds.
If you read OP's story, he said the hack just happened after 3 hours after he created his MEW wallet and based from his answer, i don't think OP is a careless person.
you cant do anything to bring back your tokens once the transaction is completed,but you can ask mew to ban that hackers address.
lol ban. What's the point to ban the wallet if he already cashed out all inside from that wallet?