ServiceNow Staff Software Engineer interview questions

applied online, then got a phone screen doing an online coding and some database related question. Was invited to onsite. Technical part went well, until reached the hiring manager round, where he asked many behavioral questions. I didn't do well pleasing him. In the end of that round he said the director(the director was supposed to be the last interviewer in the loop) had a schedule conflict, so he could not make it today, and said we may find some other time to talk. I immediately know he failed me. As expected, the director call never been rescheduled, and the recruiter never reach me back, even not a rejection email/call. My overall impression is some interviewers are not professional and don't treat candidates with respect. I can easily extend this to how they treat their co-workers or team members.