I was contacted for an interview and made an appointment to speak with an HR person who was going to call me. I never received a call or response from several follow-up emails.

I spoke with a recruiter a few times that let me know they would be scheduling a follow up interview. I didn't get an interview invitation so I reached out and was told it would be scheduled soon. I still never heard from them and my future emails were ignored after that. It felt very unprofessional to be ignored after being told something would be scheduled. If the position was filled or I was not qualified, I wish they had just said so. I was clearing my calendar to make sure I had time and preparing for an interview for no reason.