Citi Manager interview questions

Following a phone interview with an HR specialist, I was invited to a personal interview with the hiring manager. Then another one followed with a global leader. Then two more personal interviews with local higher management. After the 4th personal interview, I waited 3 weeks for a reply or an offer. Sent a mail to two HR people after 2 weeks, no reply. Then got hold of another HR person in charge of giving feedback. Found out they decided to hire someone else but missed to notify me. I was not impressed.

Minimum 4 rounds of Techincal plus HR. Its include written , techincal , manager and HR round. They evaluate you not on just techincal but all 360 degree. Tough and challenging one.