Shockingly horrible. - Help Desk Analyst Zones Employee Review

I applied to a job opening, had a phone interview that went really well, and the staffing manager set up a virtual interview conference for almost a month away. I spent the month studying and preparing for the interview. The morning of the interview I sat at my desk and waited and... nothing. No call, no email, nothing. I emailed the staffing manager asking about it, and never heard back. I can't believe I was ghosted during the interview process. Shockingly rude and unprofessional.