Techwave Consulting Full Stack Developer interview questions

I wrote the Online test. After that they took 30-40 mins of technical interview. Answered all questions. I thought I was selected. After 10 mins they said you can leave for the day. I asked reason they didn't tell anything. I think they rejected because the interviewer ego has not satisfied as I answered everything. It's such a worst thing from their part. I don't recommend anyone to join or proceed with this company ever.