this machine will not communicate

LOL, had a similar incident a few years ago when I was doing a two week stint on overnights in the middle of summer in 90F+ heat. Woke up, thought I heard my dad call me, waited to hear if he called again, he didn't but I went downstairs and said in an unpleasant tone and not too kind words that I was tired and I would wake up when I was good and ready. He just gave me a blank stare and was like "That's great, Beth Ann, but what are you talking about?" "Didn't you just shout my name from the bottom of the stairs?" "Nooo." shared WTF? looks, shrugs, and departure. :P