Epsilon Program Manager interview questions

Three rounds of interviews. First, a phone screen/initial interview with HR. Next round was an hour Zoom call with the hiring manager. Third round was an hour-long panel interview on Zoom, with the 4-person team I'd be working with. Interviews went well, lots of good conversation. My experience would have been a great fit. Unfortunately, despite following up, I never heard anything back from anyone. Completely ghosted. I rearranged my calendar for these interviews, and studied hard, so I'd be prepared. Incredibly rude, disrespectful and lacking basic common courtesy. Not even an email saying they'd chosen another candidate.