Credit.com interview questions

I had a 15 minute conversation with a recruiter who then introduced me to the hiring manager. I had a 30 minute phone conversation with the hiring manager and was then invited to come in for an in-person interview. During the interview, I met with 5 different people and it seemed to go well. At the end, the hiring manager asked me if I would be willing to speak to another person on the phone the following week and I said yes. That evening, I sent some availability and she said the recruiter would be in touch. After 4 days had passed, I emailed the recruiter to follow up and never heard back. This was 4 weeks ago, and I never heard anything from them (not even a rejection). Very unprofessional in my opinion, especially after someone has invested time in your interview process.