Philips Software Developer interview questions

I had 2 technical rounds followed by managerial round. First round comprised of data structures, operating systems, database, preferred programming language, oops, and other algorithms. Second round was in depth technical based on the above concepts

One of the worst interview experience, they will call you and schedule interviews on weekdays. You must be ready to wait in their office, HR says panel is not ready all the time. They don't plan to finish within a day but call you on some other day for further rounds (weekday). I attended at Manyata tech park Bangalore, I finished my first technical round it was quite easy and cleared it and went for second round another day. This time the interviewer itself was struggling and he didn't look confident. I even saw him shivering while writing something on the paper. This round was also easy and I answered all the questions and wrote programs. He was okay with them. It lasted for 55 mins to an hour. I thought everything went well. After this round HR calls me and asks how was the interview, I said it was really good. She asked me to leave for the day and informed me that she'll keep me posted. I sensed something here. Since it was referral, I got to know next day that I was rejected from my friend who referred me. It was a real shock for me! I don't understand what was there in the interviewer's mind. Real waste of two precious days for me. Such bad ethics from one of the best named company in the industry.