SS&C Software Developer interview questions

First, the recruiter did a phone screening ask me for more description about the resume then scheduled the interview meeting. Next step, is interview with both manager and software engineer in the team there is some live coding problem in this step.

1st round is with HR, 2nd was a more technical one focusing on OOP in general, and the 3rd one was 3 back-to-back interviews with different people. All in all, I wasted 4+ hours interviewing with this company, and was ghosted without even a rejection letter. I've emailed them twice, and never received a response. Plain disrespectful.