I had a customer who was truly awful to me, and when I got home I called my dad to vent (and cry). My family is about a thousand miles away, and my mom was at a conference, so it was just my dad and brothers at home. he's diabetic and I could tell he had a low blood sugar, so I got my brother involved, who eventually had to call 911 because his blood sugar was so low and he couldn't eat or drink. Long story short - terrible customer may have saved my dads life????