They call these "spoof" calls. Ho ho. What a "spoof."
They steal a legit phone number in an area code you might be using. Your caller ID tells you it MIGHT be a legit call. But if you don't recognize the number, don't bother. I let the phone machine pick up.
Yes, static. Just annoying crumbly static noise on my answering machine for a minute. Defective robo-call message machine on their end?
Got a call from this number and automated voice saying it was about my current electric bill. Hung up and when I called back it said the number was not in service. Just ignore the call or put on call block