Deloitte Software Developer interview questions

Had very bad experience,first they ask us to join 15 min before the scheduled time, then Interviewer comes 15 min late and it looked like she was not prepared for taking interview, asking meaning less questions, herself didn't know what she is asking. yawning and changing position everytime in video interview. Giving interview felt pointless to me and I wanted to exit the interview. Interviewer should be prepared first before taking interview.