I never answer calls not in my phone book. Others have reported this is some sort of security system scam. Let's explore why discussing anything with a cold caller about your home or business security is a BAD thing.
First, this call reportedly originated from California. Judging from the current political situation in CA, the chance of a call from CA being from a Democrat communist traitor is high. AVOID any business relationship or even discussion with someone from CA.
Next, let's say you discuss your security situation with an anonymous caller. No seciruty system? You have a system now, Oh really? What kind of system do you have?
Any information you provide can easily be correlated with your street address and provided to local crooks. NOT A GOOD THING!
Don't answer calls from an area code I don't know, or even in my area code if I'm not familiar with the number. If they were legit they'd leave a message.