The NPD Group Client Development interview questions

NPD Group came on campus where they give company presentation and took an interview which was about my background and current education. I got selected for 2nd round of interviews which I came to know after 3 weeks of follow up in which they never care to reply. I had 4 skype interview scheduled from EVP,VP and Executive directors (all interviews where behavioural or question & answer type). EVP told me about different work location and different work profile. Anyway, All of my interviews went well and they were highly impressed. One of the interview from 4 interviews didn't happen as HR told me afterwards about that (again unprofessional attitude). I figured out that NPD is very unorganised and laid back etc. type of company (clearly I never want to join). After a week, I followed up for the results in which they replied "no appropriate position at this time"!!!! Like I said before, they don't know what they are doing so the position doesn't exist. Suggestion - Don't apply for an internship or full time at NPD. You can do better