Analogue IT Solutions Java Developer interview questions

I had interview for Java Dev role. Interview went well and I cleared it. The next day it was supposed to be HR round. As they call and asked for a immediate call and I wasn't available, I asked them to conduct it the next day or around 6pm the same day. They fixed for 6pm and I was ready for the interview. They didn't send the meeting invite; No update on the interview; I messaged and called them but no response. I waited for 30 minutes and assumed that interview is cancelled. No communication. After 2 days, I called to asked regarding the interview and they said "we found another candidate". HIGHLY UNPROFESSIONAL NO COMMUNICATION