Deloitte Project Controller interview questions

I had 2 great initial interviews over the phone. Scheduled to interview in-person with 3 managers. It was extremely unorganized from there...didn't get the schedule until the day before (after I asked 3 times) and one of the managers interviewing felt like changing the schedule 5 mins. before interviews started. I'm not sure why the admins even accommodated that request. 2 basic conversational interviews and then a "case". You are told that there is no right or wrong answer for the case and that the interviewer is analyzing your problem solving abilities. As soon as I walked in the room, the manager said, "btw, there is a right answer." The case wasn't really a case...it was more of an exercise on how well you use Excel...not much actual thought behind what you were plugging in. Use of pivot tables and v-lookups seemed to be more important than the thought process behind it. Since they use Excel for everything, I suppose that's what they're looking for. I felt rushed the whole time and instead of just letting me arrive at my own conclusion, he told me what to do or would stop me if I wasn't doing it how he wanted. Not what I expected. He was definitely more concerned about the interview being over so he could grab lunch. It was a disappointing experience with Deloitte. I was told that the PC practice has to "convince" the other practice areas to use them. If you like collecting and tracking expense reports in Excel, then this job is for you. Not sure if it was just the ATL office, but I wasn't impressed by the folks I interviewed with and we didn't vibe that well. Having some knowledge about how Deloitte does their project budgets might help since the case seemed to be more focus on their internal process.