AIR Communities interview questions

I got a call from a recruiter after applying online. Typical questions about skills and work history. I didn't hear back for about three weeks, and this was directly from the principal engineer. We then setup the behavioral interview in person. I thought this went well and they were normal questions about certain situations and how I would handle them. A couple of days later my tech interview was scheduled for a remote interview with the whole team. I thought this went well and after the interview was over we discussed next steps and I should hear back by midweek. I never heard back one way or the other and even tried to reach back out to the principal engineer but nothing. It's really unprofessional to not even get a quick email back saying no thanks. We put so much time in to be professional and put our best selves out there. Needless to say, I can't recommend a company that can't even give an email saying thanks for the time, but we've decided on someone else.

Lengthy interview with the promise of 5, yes 5, additional interviews before an offer would be considered. Company ghosted me after what I thought was a great interview and multiple follow ups. No regard for my time or efforts, with a very clear culture of corporate greed.