Codingmart Technologies Junior Software Developer interview questions

There was 3 rounds of selection process. First round was interview .The interviewer was very friendly. . He asked medium tough questions. At the end of interview javascript program and react program questions were given to solve. I got selected in this round. Then I got call from hr after few days. But HR asked me to attend the next interview within 4 hours after her call. I told her that I had to attend other interview. But she did not agree and I couldn't get opportunity to attend next round .