CoBot Systems interview questions

It was the final round of interviews. The interview was taken by Rahul Saxena. He is the CEO of Cobot Systems. He was very rude throughout the interview and talked to me in a very harsh tone. He went ahead to use expletives and also words like "bloody" during the interview. This was very unprofessional of him. I feel there is a certain way an interviewer should behave with an interviewee, at least the interviewer should not harass the interviewee no matter what. I did feel harassed and I also think I was looked down upon because I come from a lower caste and he enquired about my caste during the interview. Worst experience ever.

I had applied through the company's career portal. They sent me mail for the interview after 2-3 weeks. First round was related to programming, data science, and machine learning projects. Interviewer asked 7-8 questions in the interview.