Sigma Computing Senior Front End Developer interview questions

1st technical round- . very bad way to interview. there is no introduction of company. they did not ask mine. it's a courtesy to ask if the candidate has any questions after the interview. After the interview i had to follow up twice to get feedback. its'a reject. They don't have any idea on what to expect from the candidate. I request management to reconsider their interview process / train your employees on how to take interview. please dont waste candidate's time.