I applied for position and a few days later got an email from HR for screening interview. I suggest my availability and interview was scheduled on my first availability. One day after I saw an email showing my interview time has changed without any notice or asking about my availability. Since it already conflicted my schedule I wrote HR and asked if this is true. He confirmed the change and asked me if this works for me. Of course it did not and I kindly asked to reschedule on my next availability. In a few minutes my interview was cancelled and HR ghosted. I searched the company and had positive opinions about it. Now I need to rethink about it. This is not the way to treat prospective employees.

straight forward, I had four rounds. One was in a virtual video submission then with the hiring manager, then the director, and finally with HR. A lot of behavioral questions