Ask HN: My website is being attacked by Facebook's bots. Anyone have a contact?

The site is BookDNA.com, and I finally had to block their ASN as the server was crashing.

Does anyone have contacts for someone there who can help?

Their bots do not seem to respect our robots.txt file. They are hammering two specific pages that robots.txt makes off-limits to bots, and the majority of hits are on those two pages.

/bookshelf/action/book-dna

and

/bookshelf/historical-romance/book-dna

Fun fact: In the last 12 hours, Facebook's bot volume is 12x Microsoft, 19x Apple, and 20x Google.