There was only one round for the interview. Everything was alright but I would say HR was not prompt in responding and I had to ask for updates multiple times weeks after the interview. Furthermore, the HR person would call me at night to inform me about updates. I think the worst part is when they offered me the job but when I said I needed time to think about it, they retracted the offer. They briefly apologised for retracting the offer but it was not sincere at all. Not very professional in my opinion.