EncureIT System Senior Mobile Applications Developer interview questions

Face to Face interview was there, interview was very good, technical person said to wait for minute HR will talk to you after 10 minute he came and said you can leave now, behaviour with person who came for interview is not good, These people doing timepass with persons who come to interview, they don't have seriousness,I already mentioned my salary expectation during first telephonic round, from in-person I found that they rejected me because salary expectation, then why they arranged my interview?just for time pass,