XIPHIAS Software Technologies Software Engineer interview questions

Very unprofessional in hiring process after CEO round they have rejected my profile without any valid reason. They will manipulate alot during the interview that this is final round that is final round but they will never come to salary discussion and will reject. Better keep this company in back up . At the last day of my discussion they have asked me to go home and do the homework about the company and come back. when I went after 2 days just for formality they have taken 5 mins introduction and rejected