I think a ROBO caller, we didn't answer. Left no message. Called around 0915 hrs. Woke us up. We are aged, in our seventies and stay up late as its hard for us to go to sleep, when we do get to sleep we sleep in some time until noon. We would take the phone out of our bedroom however we would not want to miss an important call from our children or grandchildren in case on an emergency. We still worry about their health and safety as there is some medical issues with them.