Welcome to the show. Before I founded my startup I was a media buyer for about a decade and specifically I spent most of my time doing Facebook ads (Since 2012). I spent literally millions some year and couldn't get support most of the time. If I didn't have a chance most people are completely out of luck. Their support used to have the power to reverse these decisions but as of the last 2 years they stripped them of this power. Disabled ad accounts, unpublished pages, vague reasons and no ability to properly appeal are par for the course even for folks like me. It's a horrific broken and downright abusive system to people that are entirely dependent on them for their livelihood.

The only thing I found that works is to add/follow employees on Linkedin and DM them. Sometimes that would work. I would offer to help but my contacts have since left. You can try their chat support but again I wouldn't hold my breath. https://www.facebook.com/business/news/new-online-chat-suppo...

Sorry about your troubles. As others have said collect emails and SMS numbers and always keep a local copy of them (Mailchimp and other tools have similarly been known to have such nonsense happening).