I-NET Common Service Centre interview questions

The interview process was very short and it was good and professional but after the interview they told me to wait for 30minutes for the next interview or update.After 30minutes of waiting junior hr came told me that they will conduct a interview over a phone as the senior manager is in meeting.I felt really bad after not having any response from them after waiting for long.If not shortlisted they could have told me earlier,the same person and the person interviewed was roaming here and there.I was just sitting like a puppet alone.This is so unprofessional way of taking interview.