Quantitative Research New Grad

1. Needed to solve the classic hangman problem as first screening.
2. Once I passed the screening I was contacted by recruiter. I had my first interview with the same HR which was a mess. She came late plus didnt let me ask any question and would interrupt me saying that it doesnt matter right now ask once you pass the next rounds.
3. Then after 2 weeks I was contacted back for the first technical round. I nailed it honestly. There was a medium level leetcode style problem and a few classic statistical problems.
4. Same day I received the invitation for final round. But suddenly after 2 hours of getting the link the HR called me saying that we changed our mind and we dont want to move further with you. I was also told that I cannot apply to any new grad roles in this cycle.