Lots of Meta contacts on swapd.com who will take your money and unlock your account. Poster is already at the permanently banned stage, though, which means it's not a simple ticket for a Meta employee, which is normally the $500-1000 range. It's gonna be a $2000+ job.
Can also try here:
What an interesting site. The number of sellers offering services to get YouTube videos and accounts removed (by spamming fake reports) for hundreds of thousands of dollars is amazing.
I would not assume those people have contacts with Meta employees. They might have a connection with a contracted worker who does account reviews who is willing to risk their job for a few thousand extra bucks, but I also suspect many of them are just scams. When I scrolled the subforum there were many new accounts claiming to offer 100% success rate for unbans. Easy way to scam desperate people.