I received a 3 day notice and a postal restriction due to a false message claim.

I got a 3 day ban on my personal facebook account out of nowhere. I couldn’t find a reason that was told to me until today when I opened the mobile app and it said I got a ban because of a post about “child sexual exploitation” that was removed???? Does fb just throw out gross false claims about people without providing any solid evidence? I can’t request a review because it says the post was removed. Is there another way I can contact support to discuss this? I really want to know how they could even think a post was of that nature.