Was a bit difficult to schedule a time to have the first phone screening with the HR person cancelled/reschedule 4 times. The second round in office interviews 3 back to back - took 1 hour had the response in 3 days

I had 4 interviews in a row that lasted 2 hours. They were all nice and great to talk to . I felt that I got along well and built up a good rapport with the first 3 interviewers. It was a long process and adding on other factors of my day, I was worn out by the last interview. The last interview was with the highest position relative to the other 3. I didn't perform as well and I immediately felt that I ran myself out of the runnings. While it's my fault for not getting the position, they could've at least had the courtesy to tell me I was not given the job. They replied to the thank you emails but couldn't tell me I wasn't getting an offer despite follow up emails...