University Pension Plan interview questions

I spoke with a talent acquisition specialist for about 30 mins - was asked to summarize my work experiences and then asked some fairly in-depth questions about certain elements of it, as well as some behavioural questions. I was told there would be 4 rounds total of interviews (including this one), with one of them being an optional coding assessment after meeting the hiring manager. I was then scheduled to meet with the hiring manager but, 2 days before, they cancelled it and told me the role had been filled, which I thought was kind of unprofessional.