You can tell him what HR invited you directly on the phone. Now the company is very unprofessional, and HR is only responsible for inviting interviews. Like the auditions, the delay comes from Q user: He Laoshi.

This is unprofessional of the company, because the HR of many companies is only responsible for inviting you for an interview, and the interview is with other departments or personnel. I even met HR and asked me to interview for the position of engineering supervisor. After I arrived at the company, a sales manager interviewed me? From Q user: Mr. Zhang