3 rounds of interview. The questions would be very deep. Should have 100% clarity on the answers when answering in the interview. Coding questions are common in all the 3 rounds

Interview process comprised of 2 rounds. 1. Technical round - Interviewer didn't appear, waited for 30 minutes, then third party hiring team called to reschedule next day. 2. Technical round - Cleared, Interviewer was very humble, knowledgeful, it was a healthy technical discussion, focused on the resume and urge to think what we can do then. 3. I was informed for next round, Manager round - Again interviewer didn't join the call, I waited for 20 minutes. 4. Manager round - Managerial questions - Why you leaving current job, what's your aspirations, went for 8-10 minutes. After then I didn't hear from HR, called multiple times to at least let me know the feedback since I have invested my time as well. This was so unethical, lack of integrity. How can an interviewer be left in void without telling him the feedback, On the other hand these people would call you multiple times checking if we are attending interview likewise. Anyway it was no offer.