Midland, Odessa, TX, 2:30 PM.  No message.  Some of these know to disconnect by third ring so call does not register.  If you were not on premises, you would never know they called.  Cute!  Missing call bothers me not in the slightest.  Ability to trace call is an adventure.  Numbers change with amazing rapidity.  Remember, no personal information to unauthorized callers.  No need to answer unrecognized calls.  Can't leave a message/we don't need to talk!  Stay safe everyone.