I must say this is not unique to your department. I think that all departments have the same problem.
I don't understand why it is so difficult. My riding is bilingual. Therefore, in my office, when my assistants answer the telephone or welcome people, they always say either “Bureau de Guy Lauzon, hello” or “Guy Lauzon's office, bonjour”. They automatically speak in both languages. I do not know why it is so difficult for people in the department to get into this habit.
Do you know...