Amazon Software Development Engineer, II interview questions

I was approached by HR for an opening in Bengaluru location and after resume screening, I was sent an online test link which had two parts - coding and work style assessment. I asked for time and was given a week time. I attempted and solved both the programming questions - all the test cases passed. Work style assessment had behavioural kind of questions which of course has no right answers as such. Within 1 hour of submission, I received an automated mail saying that they will not proceed with my candidature without stating the reason. HR is not responding to the mails and I never bothered to call her.

Hackerrank test with 2 questions to solve in 90mins. After about 10 days, there were 3 rounds of interviews, 2 coding rounds and 1 design. Due to some personal problems the last, managerial round was conducted after a month. Never heard about the result. Tried to get in touch with HR several times (4-5 times), they never responded.