Called on my unlisted, cheap, prepaid cell that I only use for emergencies.  I didn't answer.  Don't know anyone out of state, let alone in California.  Because the cell isn't attached to my identity in any way, I called back, out of curiosity, thinking I would have something to tell folks here.  It's a working number, with a generic female robovoice telling callers to leave a message.  Doubt they were real but if they are, they'll try again on my home phone.