Amadeus interview questions

Applied online on its own website. After a couple of weeks there was a HR call which arranged a phone interview. Then phone interviewed by a manager or CTO which should took half an hour but actually went for 1 hour and 10 minutes.

First round was telephonic interview for 45 mins. Questions were primarily covering Java and Selenium concepts. Second round was f2f interview with technical panel again in Amadeus office. Then 45 mins of manager round. Then another 45 mins of senior manager round. I was rejected in the final round. The senior manager was arrogant and came late for the interview. He is disinterested in taking the interview. Why do you waste candidates time if you are not at all interested. After having cleared technical rounds getting rejected in the final managerial round hurts a lot.