Amazon Software Development Engineer (SDE) I interview questions

First interview was to solve 2 problems online on time without interviewer. After was "On Site". 4 interviews by 45 min each. 2 coding, 1 design and 1 Leadership. Every one of them have had Leadership & Behavioural questions for the first part of interview. Didn't enjoy the interview over all. The schedule was not provided and each of the interviews was a surprise on which one is that. One of the interviewers gave me an angry look when I tried to repeat on what I understood from his words. Would never expect that from an interviewer.