Hyperface Backend Developer 3 interview questions

1. The interview process is through external agency 2. The first interview was positive experience. 3. The second interview was horrible. 1. They informed its lld and was ds and algo 2. Never informed that the ide is required or had online environment for the same. 3. Interviewer never bothered to explain the problem 4. The interviewer gave 20 mins time n went offline. I left after 30 mins as the interviewer was rude and which reflected how hyperface work culture .