Amazon UX Designer interview questions

The process followed was pretty straight forward and prompt but: - The interviewer joined the scheduled call just to inform that she wont be able to take an interview. How is this fair for a candidate who has taken a leave in the middle of a week to give this interview? I might have been very well prepared on that day. - Next, the interview was a telephonic conversation which turned into a portfolio round where the interviewer suddenly turned off her video by saying that their product Amazon chime was not working properly. - She was zoning out again and again in the interview and then finally rejected. Not sure if this was fair to a candidate or not.