I found the entire process unprofessional.

First, they scheduled an interview and then pushed it to the very last minute.

On the interview day, nobody joined the Teams meeting. I kept waiting for an hour and had sent out a couple of emails to HR and the interviewer to confirm if I was in the correct meeting or if it had been rescheduled.

A system design question was asked. I started working on it in Python, but the interviewer was unfamiliar with the language, and I had to explain it at every stage.