The number almost looked familiar, so I made the mistake of answering it. The robomessage began as "an important message from Marriott Hotels." That's when I hung up.

A quickie Internet search showed the number belonging to a private citizen. I hope her phone hasn't been cloned nor that she's a victim of identity theft.

Most likely the number was spoofed.  Someone who knows what they are doing can make Caller ID say anything they want it to say.