If your Facebook account was hacked by someone and you really want it back, the following steps would help you get it back.
First go to this link. https://www.facebook.com/hacked
Click the button “Your account has been Compromised”.
Then type in your email address, Login name , Full Name or your specified Phone No.
Then Facebook would search for matching users. If you still don’t see your account, try entering something else other than the one you entered.
( for example if you entered your phone number and it didn’t work try entering your email or Login name.) Most of the time using your email would be the wisest choice.)
And hit Search.
Now for this step you got to enter your account’s password. Well if you knew the password you won’t be here anyway, cause you don’t know your new password the hacker’s changed, enter your old password. The password that you use, to enter into your account before you got HACKED
Then because you entered an old actually now wrong password another page will come up. Just click the reset my password button.
Your primary email would be changed so well of course you don’t want to send your reset your password link to the hacker’s account so, Click “no longer have access to these?” link.
Now you almost got your account back. Write your new email address that you want to send the change password link as well set as your primary email.
Follow the next steps and you would have your account back in 24 hours.