Prudential Senior Data Scientist interview questions

I was referred by my friend. HR schedule a phone screen for 30 min but she sounds like in a rush and only talks about 10 mins. Then I took a online assessment. Fail me after the assessment

The interview process had the following rounds. 1. Telephonic screening by the recruiter. 2. Interview with principal data scientist ( 30 mins video call). 3. Data Science assessment. 4. Technical round to assess your work on the assessment ( 1 hr approx, 2 people panel round, video call) 5. Interview with the team lead.( 30 mins) Seems like I cleared all these rounds, but the position I interviewed was filled out by someone. And all of these 5 rounds were rescheduled 2-3 times, making the interview process long and tedious and then the role is filled by someone else.