Nobody else has mentioned this so I will: leave an email address in your profile, or dump something sharable in a comment here. (Pretty much everyone here (relevant) can de-base64 (which can be convenient, a la data:text/plain;base64,...) or figure out "gmail@myaccountname".)

Best case scenario, someone from FB could say hi. Not officially (that would be a nice miracle), but rather some person working there. Then you could start chatting with them, they could figure out somewhere you could probably get in on the ground at, and give appropriate instructions. AFAIK internal recommendation is the best way to get through/inside The Great Wall of Google™, perhaps that's the case for FB as well. Note, I have no experience with either company, but in a thread like this not having contact info is wasting your 15 minutes.

Also note https://news.ycombinator.com/item?id=15188618 - apparently what happened to you is quite common (!?).