My caller ID said it was Facebook as well. Highly doubt it, why would Facebook call any of their members. My guess its a scam hoping someone will answer just because caller ID said it was Facebook. This scammers are more bold every day. I never answer, unknown, private of toll free numbers.
Caller ID says "Facebook". I don't know why they'd call me. I have never used it, and it is blacklisted in my firewall. I didn't answer, and they hung up on ring 4