Good day Michael,

Sorry to hear that.
FFS will not be liable for hacked accounts and there is nothing that they can do about this matter. This is a Facebook concern.

If your account has been hacked and you can still access your login email address, please attempt to reset the password to your account by selecting the "Forgot your password?" link that appears above the Password field on the Facebook Login page. An email will be sent to you with steps for completing the process.

If your account has been hacked and the login email on your account has also been compromised or has been changed, please send us information about the account so we can look into it further and hopefully restore access.
Please submit your report:
Click here

Also check this for a detailed information, From Facebook Security:
Click here
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Read this also and I quote:

From FFS: Terms of Service: General Terms

''You are responsible for using the Service in a private and secure manner. The Company is not liable for any damage or loss due to unauthorized account access resulting from your actions, such as sharing your account password or not logging out of the Service. Where the Service utilizes the account management of a social networking website (such as Facebook, hi5 or MySpace), you are responsible for maintaining the confidentiality of your applicable social networking website password and account, and are fully responsible for all activities that occur under your account. ''

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You can also post your FFS Id so to check it and they will ban the account temporarily.
I hope you'll get your account back and hope this could help you resolve your issue.

Thank you.