One Network Enterprises Software Engineer Java Developer interview questions

I applied through consultancy. It was supposed to be a scheduled drive but it happened to be a walkin. It was open for java Developer as well as Manual and Automation testing positions on the same day. The management was very bad and they didn't even had place for all the applicants. There were 8 average programs to be answered within 1 hr. Didn't received any feedback.

1) Written Technical with 3-4 Program & 1 Error find program 2) Tech Interview 3) Tech + Manger Round 4) HR Round They took all round after they did't call me when I asked them they told me that I have not clear 3rd Round. Then I ask if I have not clear round they why you people took my HR Round.. no reply from their side...