BlackRock Senior Software Engineer interview questions

I applied online and received a hackerrank coding challenge and scheduled for an on-site interview at Atlanta. On the day of the interview, the building was a WeWork co-working space and they have not provided for parking fee which was quite much. Since they don't own the building there were no basic facilities provided or at least easily available like a mineral water bottle. The total interview was about 3-4 hours long with 3 technical rounds. Interviewers were nice but there was not adequate break between each round. For on technical round interviewer come up with his/her laptop and took 10 minutes to set up and then asked to finish the challenge in remaining time for that hour and it was a bad experience. Since I was expecting a workstation with readily setup development environment for a challenge. After completion of all-round lunch was served with a presentation about Blackrock, just after that final decision was conveyed which is really good that they didn't make us wait long. After I received the decision asked for just feedback on an interview for learning and development purpose a couple of times but seems to me they don't care/respect candidates enough to reply even after I followed up.