BlackRock Project Manager interview questions

I applied to the position online. About seven weeks later I was contacted for a telephone screen with the hiring manager. The next day, I heard back from HR for in-person interview in New York city. According to the initial schedule communicated by HR, I was scheduled to meet with three people. The actual interview, however, I met with five people. The people seemed to be very nice at the interview, but based on the overall experience I am not at all impressed with BlackRock. My thoughts are that it is perfectly fine for this or any other company to reject candidates which we as candidates understand as a normal part of the process. BUT, the thing is that if the candidate has incurred his/her travel expenses, spent time, gone through the effort, then it is only fair for BlackRock or any other company to communicate the rejection in person (preferably) or email. It is absolutely unprofessional and rude of BlackRock or any other company to not provide any communication.