I called all three and they start with an automated message saying "please press any button to be removed from automated call list" so I did and it said it would take 24 -48 hours to remove me. we'll see.... I still dont know who they are.
They didn't leave a message. When I attempted to return the call, I got a recording that it was not a working number. I live in 310, and I don't often get SPAM calls from local area codes. My guess is that it's a technique of appearing to call from locally to make us more likely to pick up.