They call and hang up quickly in the hopes that you'll call them back, which is a loophole in the "Don't Call" law. If you call back, they try to sell you crap.
An automated call... when i said hello they picked up the phone. i said hello again and they hung up.. i called them back and you get automatically put on hold and they play a message about auto insurance
Auto Insurance...asked to be removed from their list....The guy wanted to argue with me. My husband had the same thing happen in the past so I hung up.