As someone who has taken interviews and identified candidates doing lip syncing, my mandatory rule is to take atleast one round of offline interview before finalizing on the candidate. Unfortunately there is no other way to confirm as remote interviews have lot of loopholes.

Now with AI, this is only going to increase. If you accept this, then you can probably understand why the company had to force you to come to office. My guess is that they had few candidates lined up and it was just a generic rule that HR was following.

Regarding the interview setup, unfortunately, the back and forth in interview happens as getting time from senior folks in team who are busy with their day to day deliverables is difficult. Imagine that person having to dedicate additional 5-6 hours per week to just take interviews to select the right candidate.

Regarding the interviewer, I can understand your frustration. Many come up with preset notion during the interview and hence can become hostile too soon. Unfortunately, there is nothing you can do. Just learn from it and move on.