Deloitte Business Technology Analyst interview questions

There were two rounds of interviews. The first round consisted of two separate interviews - one behavioral, one case. The second round interview was an extended case and some light chit chat with a partner at the firm.

The interview process itself was standard. I attended two technical interviews, one versant test, managerial round and then small f2f with hr. Then I was told that I have cleared all the rounds and a small matter of client round was left which was to be conducted a week later. Then there was very little follow up and I didn't get any info for the client round going forward. When I sent a mail asking about it, I got reply saying they have no clue when it'll happen. After 22 days and a few mails from my side, I finally got a confirmed reply that they will not go ahead with my candidature. I would like to ask the HRs why I was left hanging for almost 3 weeks. But I suppose there will be no reply.