My Younger Sister, many, many years ago took some driving lessons. One day, her Instructor did not turn up, nor did he 'phone her to tell her. My Sister stewed on this for a while and then 'phoned his home number. A Lady answered, my Sister who was not a happy bunny having waited so long, immediately told the lady that she was not impressed with being kept waiting etc. The Lady was the Instructors wife who then tearfully explained that her Husband had collapsed and died that very morning. My Sister was completely and utterly mortified. She has never, ever forgotten it and still feels very ashamed at her behaviour that day. She never looked for another Instructor, and gave up.