Unprofessional, not prepared and repeating questions, no feedback or update after 3 rounds of interviews, the HR messaged me twice before the technical interview at 12 midnight and 3 am

Worst process . I was earlier part of deloitte and had a great experience but this time it is worst than anything else. First they keep rescheduling my interview with just 30 mins before schedule time. Next suddenly out of blue interviewer call on my mobile and discuss when to schedule the interview and asking me (Candidate) to reachout to HR and schedule the call(its bizzare why cant interviewer reach to HR and asking candidate to do coordination) very unusual for firm like deloitte. Finally actual interview is the most bizzare i have ever handle , full of personal questions (not role or technical specific) and than no flow of case study or anything random technical words. I am absolutely fine if you have intent to not higher me or dont find technical suitable but act professionally . Eventually i decline the role