EF (Education First) Customer Service Representative (CSR) interview questions

Weirdest experience ever. I was interviewed by the hiring manager, I went through 4 stages, I even went in to meet the team, the recruiter told me that they would make me an offer once the hiring manager came back from China. The hiring manager came back from China and they said that they picked someone else (internal? No idea). I was shocked, I have never experienced anything similar, so unprofessional! When I went to the office the vibe was extremely off, cult-like, on site gym that screamed "you will live here", they demand 4 days a week at the office and when I ask if there was any flexibility around that they said "no but you can take time off" oh really? CRAZY