Block New Grad Software Developer interview questions

Extremely unprofessional. Scheduled a first round telephone interview and the interviewer never called. I tried to get in contact with the company and my recruiter but there was no phone number for my recruiter or any publicly available phone number for the company. Ended up having to email while waiting by the phone like an idiot. Eventually get a reply saying that my interviewer had a site outage to deal with. Letting me know that the interview had to be rescheduled would have taken less than a minute. Finally get an interview scheduled and the interviewer ruled me out in the first couple of minutes after I asked for some time to think through the question. He ended up just telling me the answer every time I paused to think through something. I guess he just wanted to get the interview over with. After 10 minutes, I felt the same way. Got rejected. No problem. As far as I'm concerned, I dodged a bullet. I was asked a leetcode question which was of "Hard" difficulty.