I got a call from HR department for interview process, had appeared for 1st round of interview, it took near about 50 mins for techical discussion round, after 2 days I got back call from HR that I am seclected for next round, so I appeared for next round also, give proper ans almost each and every questions except 1, at last I aksed the interviewer about my interview, he told me he is satisfied enough with my knowledge and HR will connect with me very soon for next process, then did not got any response from HR, after 2 days when I give a call HR told me it's on hold will inform you regarding this, then again next day when I give her call HR told me I am not selected, Don't know why, when the interview person told me he is satisfied with my knowledge and HR will connect with me for next round how I got rejected? simply killing of time.