Partior SRE/DevOps Engineer interview questions

-round1 - they asked about my work history and deep dive from there, reasonable interview. -round2 - got an email from interviewer after waiting 15min, saying will be late, attending the company XMAS party. interviewer did most of the talking. asked the usual HR interview questions, -round3 - 20 mins before this interview, got an email saying "sorry will have to cancel and reschedule". recruiter investigated and got the response from the company - "today is last day before our office is closed for xmas and NYE block so its all very busy now" interview got pushed 2 weeks. -round3rescheduled.. 5-10 mins into the presentation interview (45mins long) for the take home assignment .. could already feel that the interviewer already decided on rejecting. unprofessional company, slow and terrible communication