Amadeus Software QA Engineer interview questions

I entered 1 human resources and 2 technical job interviews. and the conversations were friendly. I also had a technical interview, which was not very difficult. and i came across java oca style questions.

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.