It was a simple DSA round , though I provided the correct answer I was rejected. When I raised it to the HR , I did not receive any response.

Over the past 4 years, I have given countless interviews, and I can confidently say that this company is pathetic to interview at. I applied for their software engineer role. They took 1 month to schedule 4 interviews (3 tech + 1 hr) back to back. The HR person told me each of the four rounds will focus on different aspects and you can take my word for it. You can guess that never happened. The worst round was the HR one. I have never meet any interviewer who boasts about their years of work experience, I have no clue how that is relevant to the job opening. The HR interviewer used every chance to say that they has 10+ years of experience in the HR industry. Overall, I feel that the HR interviewer was playing games with me. To top this all, the HR interviewer had no courtesy to turn on their camera. When asked, they refused to do. I have never seen a company with more RED FLAGS.