It's good to apologize to people.
Frank mistakenly dresses down an employee before realizing he has the wrong person.
Frank wants to address the error.
Frank apologizes for the error and tries to make amends for his error.
Frank berates the employee for not speaking up about the error in the first place.
Franks is able to avert any bad feelings that might have developed.
Frank comes across as being unfair to his employees.