adidas Project Manager interview questions

HR reached out to me to schedule an interview. We had a few emails to confirm on the timing and date. On the day of the interview, HR did not even attend the interview that they scheduled. I got ghosted. After I sent a follow up email to enquire on the status, not only did the HR person not reply personally, I just received a generic rejection email generated from the system (indicating that the position has been filled). Unprofessional.