It is a scam...864-336-2400 call your local police station. they have had a couple calls already but the more calls about it.. the better chance you have to get the scammers caught! remember if someone does not report it. there is someone out there that WILL fall for it.
Same thing here - just got an automated message saying that they were calling from "A Federal Credit Union" and that my account had been accessed via an unauthorized party. It advises me to press a number to talk to their security department. I hung up. Scam!