Authorium interview questions

A lengthy four-interview process, but not enough respect to send feedback to applicants requesting it after rejection. I interviewed with an Office Manager, Department Manager, and twice with a director. The first several interviews went great, but the director was double booked for my first interview. Things happen, so I politely accepted the offer to reschedule. Second interview with the director seemed to go well and ended with me being given advised I was being moved forward. First thing next morning, I got a generic rejection letter. No response to my request for feedback. Applicant be warned, you will be strung along for 2-3 weeks and ghosted.