SUE FARCEBOOK!
In the USA you have a constitutional right to know the complaintant.
Sue Farcebook for everything you can and I hope you win. It's the only thing that will ever "get their attention".
HOWEVER, you are not a US Citizen, and you should really create your own regular website and never use Farcebook or other social media for anything critical. If you were in the USA you could use small claims court for about $30 you can sue anyone (almost) for up to $3,000 but you have to prove damages.
Unfortunately, NOBODY has Zuckerberg type money floating around or their lawyers.
Biting the hand that feeds IT
