TSYS|Total System Services Senior Test Analyst interview questions

There were total 4 rounds - 1 online assessment, 2 technical F2F and 1 Managerial. The online test was fairly simple. For the F2F, they had called around 20-30 ppl. The tech rounds were moderately tough. 1st tech interviewer asked testing methodology, sql queries, unix and agile. The 2nd tech round were more sql queries, the projects on which you have worked, and also some analytical questions(related to coins or water&jug).I answered all questions and my feedback was positive. Next was managerial round for which they made us wait for around 45 mins. That round was the worst, the person seemed least interested in taking the interview. He did not ask any tech questions but all behavioral ques of hypothetical situation like 'what would you do if....' moreover he was not convinced with even 1 answer. All the time kept saying that he is not convinced with my answer. He even asked some very non professional questions like tell me 3 negative things about your current manager and current company. And he was not convinced with those answers as well. It was as if he already came with mindset to reject. Worst experience. Why waste time of the candidate with 3 techincal rounds when finally the manager(who did not ask even 1 technical thing) have to reject you on the basis of some unprofessional questions.