Digitas Senior Analyst interview questions

I was referred by a c-level executive to the recruiter and another manager. I followed up with every step after I made a phone screening call with the recruiter and they invited me to the office. I was not informed if this will be an official interview or not but I was prepared for a one. Well, I met with the manager and 2 people from the team at her office. She made the people from team ask some random questions to me and I felt like they were not prepared for this either. They asked me a campaign response case question by showing some graphs and campaign response rates in Excel. During the talk, the manager understood that I was not closely related to the c-level executive. After that, she told me to seek opportunities and to keep in touch with the recruiter upon my graduation. So I did follow up with the recruiter a couple of times but they stopped responding to me as they knew that it wouldn't be a problem with their boss. I think overall it was a poor sign of HR processes. It also seemed like the current employees were really not enjoying their positions and they were surprised that I was into the position.