Aptean Senior Software Engineer interview questions

I had given the interview at Bangalore location. They told that interview process is of 2-3hr but it took a complete day for me where I have to go to office also. First they took the written test which contains basic Aptitude Question and behavioural test. After clearing the first round there was a technical round. There were 2 person sitting and ask each and every question from basic to complex in Java. They took my interview for 2 hour. After than HR told that I had cleared that round and manager wants to meet me for 10min. There was again a 3rd round with 2 managers and they asked some basic question why you want to join Aptean and some 2-3 technical question. After that HR told me that they will let me know on Monday. When i called them on Monday HR told that he didn't received the feedback yet and once received he will share it with me. I received the mail stating I got rejected. I dont know on what basis they rejected as I had cleared all the round and managerial round also went well. Waste of time.