Robo call took a second after I said "Hello" to connect, then I just heard heavy breathing and boiler-room (call center) background noise. I hung up.
Last year our neighborhood was targeted by an apparent scam: two nights someone was running through our yards at night, opening gates, trying doors and scratching at windows. The third and fourth day, there were alarm company salespeople going door to door!
This number frequently calls my number. If I answer it, they hang up. Obviously a robo-call designed to leave a message on an answering machine. This should be against the law.