Got it today on the cell phone. The LG cell phone has a setting so it won't answer unless it is in my contact list but records the number. The home phone, Ooma Premier, "no more robos", and has a block list I can add to but I rarely bother with anymore since it has caller ID. One simple rule, if the identifying caller only has a city, or just a number forget it. Thanks all for the information!
This is probably a robo-dialer or scam caller. I have been receiving an overwhelming amount of these calls over the past couple of months and don't know or understand how started. Possibly because I answered a call from a number I did not recognize because I was expecting a call from a company... and that call was a hang up so I most likely "confirmed" that my number was legitimate and now they're calling like crazy.
I keep blocking the numbers but they just call from new ones. Maybe they will eventually give up or run out of numbers.
I do not understand the point of these calls.
P.S. Most of the other numbers I get calls from are for business loans. That is what others have reported. I never answer them and they never leave voicemails. I don't own a business so these calls make zero sense.