That's probably correct, but they made it difficult to contact them, which removes any excuse that "it was an automated system that did it" provides.
Yes, if they made it easy to contact them they'd probably get LOTS of complaints. Guess what, They OUGHT to get lots of complaints.
Personally, I don't understand why people are willing to use Facebook, but since they are there are they are a public accomodation. It's not quite the same as a monopoly, though there are certain similarities, strongly reinforced by the network effect. As such for them to refuse service should be a crime. When this is going on internationally, though, things get quite complex, so they have an obligation to make contact, explanation, and negotiation easy when they refuse service. When they don't I start seeing valid reasons for countries to refuse to allow them to do business within "their borders".