Protiviti interview questions

I'm a recent MBA grad from a top B school. I came in contact with Protiviti through an employee referral. An HR Specialist reached out to me just a few days later. She asked a few review questions and set up an interview with her HR Manager. The manager asked me the exact same questions and set up 3 separate phone interviews with a manager, senior manager, and director. All three were supposed to call me. The manager forgot and we had to reschedule. This took weeks. No apology. All three of these interviews asked a couple behavioral questions and went over my experience and resume. A few weeks later I recieved a call from the HR manager asking me to set up a day of 1 on 1 interviews. I agreed and met with another senior manager and director. The interiviews included a couple behavioral questions again and resume review. I was promised by both parties that I would be contacted within a week. They needed to determine where I would best fit. I assumed the interviews went well at that point. I reached out to 3 of the folks I interviewed with and I haven't received a reply or a phone call from anybody. After 6 interviews and alot of my time I feel I deserved a call or even an automatically generated email.