"They 'hacked' my account!". Nobody hacked you. If you have BTC on exchanges, just do this 2 things and you will be safe from "hackings":

1) Use Google 2FA (never use text/SMS/phone 2FA).

2) Use the WHITELISTED withdrawal addresses list setting. This way ANY withdrawal can go ONLY to your own wallets.

That's it folks! So simple and easy. If you haven't, do it now!