Deloitte Business Analyst interview questions

Three rounds - an interview with HR, an Interview with the Director and one with the Senior Manager. The people I met were very friendly, professional and polite, they asked me mainly competency based questions.

The interview was conducted over the phone. There was so much noise I could barely hear the interviewer. I was in a completely silent room. The phone behavioral interview was perfect, then they told me that I will have my case interview in the next 3 days. I have to admit that I wasn't fully prepared for the interview because the referral was sudden, and I have no expertise in consulting whatsoever, but still having the case interview over the phone was not that helpful.