Liberty Mutual Insurance Financial Management Program interview questions

I had a contact with someone in HR. Received a phone interview. Nothing difficult, just "tell me a time when" questions and personality questions. Heard back after a week and was invited to come in for an in-person interview. In-person interview consisted of a 90 minute case study followed by two 30 minute 1-on-1 interviews with mid-level managers in Finance department. Case study wasn't very difficult, the challenge was to assign a credit rating to two different organizations and outline pros and cons of insuring each organization. Review your basics, but it was not too difficult. First 1-on-1 interview was all fit questions, nothing technical. Second 1-on-1 interview was also fit questions, but I also had to present my findings from the case study and explained my reasoning behind the credit ratings. Overall, had a good in-person experience. I was told I'd hear back within a week. After not hearing back after 2 weeks, I called and emailed my HR contact six times to learn the status of my application. I never heard directly back from my HR contact. About 2 months after the initial interview I finally received a generic email telling me I did not receive an offer. Dealing with HR was incredibly frustrating and difficult. Obviously I did not receive the job but I would have appreciated being treated more professionally after my interview.