When I answered the call, no one was there and they hung up. They try and get you to call back to see who it was then they have you. Once YOU call them, the law no longer takes effect because YOU initiated the call. Do not call back these hang up 1-800 calls. If it is a legit business you have dealt with, they will call back and speak to you or leave a message. Real businesses do not conduct themselves by hanging up when you answer.