B.I.G. Consulting interview questions

The person interviewing did not greet me, did not introduced me, they were very unwelcoming and at times the sound very rude talking to me. did not asked me about my availability or anything just asked me if i knew autocad and that's all. the interview was very short and bad. Didn't ever bother to ask my name or if i had any question to them, didn't explain the job description or anything. it was like they already had made a decision and just want to attend the meeting to kill time.