Psychiatrist Esprit Blanche has a servant dismissed for failing in his duties

Regarding a misunderstanding.

"Monsieur le Marquis, I have just learned that Don Manuel has written to you. I don't know why the letter was delivered to your hotel by a servant who failed in his duties and whom I dismissed. I beg you to consider my sick man's letter as null and void. Please accept, Monsieur le Marquis, my respectful regards. Blanche.".