Airwallex Manager, Deal Strategy interview questions

I applied on Linkedin and I was contacted by HR after. We had the initial interview and he encoraged me that it's very likely to move to the next stage. A week later he sent an email apologizing for the delay because he was ill and we should reschedule the interview. I replied we already had the interview but happy to do it again if needed and he ghosted me after. Very unprofessional.