Blinkit Software Development Engineer II interview questions

HR team called me and set up interview for next day itself. In the first interview , interviewer was not interested in the response, in half hour interview he did not even try to show interest , background noise coming from other side. He then just asked a flow in the question, no input and wrapped the interview. I asked for the feedback, he preferred not to talk about it and said HR team will tell about that. No response from HR team until I reached out multiple times that too response contained just a no. I think candidate deserves to know what was the person mistake or glitches. How can a person be judged on a single line, I don't know how deep minded employees grofers have. But now I have ensured not even to think about opportunity in grofers again anytime.