Extreme Networks Sales Operations Analyst interview questions

I applied online, and a recruiter reached out via email to set up my initial interview with the hiring manager. I thought it went really well, and I was verbally told that I would be interviewed by some more team members. I did not hear back right away, so I sent an email to the recruiter to check the progress. They emailed me 4 business days after my initial interview that they would be setting up the next round. I had the second round of interviews, which I also felt very confident in. The interviews mainly focused on what the position entailed, and also many behavioral questions. After that, I was ghosted! Long story short-- I followed up with 3 people who had given me their contact information (including the recruiter and an interviewer) right after my last interview, and I never heard back. I even called and left a voicemail and my message was never returned. After 12 days of no response, I gave up. It was a waste of my time to reach out anymore. I did not appreciate the way the process was ran. Any response- whether it be yes or no- would have been better than none.