Upgrade Supervisor Customer Service interview questions

I was reached out to by a recruiter to schedule an interview. I scheduled the interview, and received multiple reminders the day before the interview. I showed up, only for this recruiter to not show me without notification of a change. I emailed to see if we can reschedule, only to get a new email 2 hours later saying they have filled the role. This company wasted my time, I would never consider interviewing with them due to one person interactions, or I should say lack there of. Find this company very unprofessional due to this experience. They should do better.