Too many detailed Interview steps (7 interviews, each 30-90 mins), and at the end, they didn't provide any feedback or response for about 4 weeks, even though I reached out multiple times, I didn't get any response back. eventually they just sent me automated response that job is close. Later, I asked for any feedback for points I was failing, and again didn't get any response.

Technical phone screen, virtual interview including 4 rounds - system design, coding, SQL, experience interview. There's hiring review after that where a separate team evaluates the scorecards and makes a decision whether to offer a job to the candidate or not.