Capgemini Scrum Master interview questions

Got a call after they shortlisted my profile. There were 2 rounds of interview. Had a pleasant experience. In a week's time both the interviews were done. The process was very smooth and quick.

The interview process was very lengthy, I had three rounds. It started from April and continued till may end, all positive rounds. Finally, I received a call from capgemini's HR asking for my documents. He shared the introductory selection mail and I shared all the documents in the mail. After waiting for a week, I didnot receive any update from the HR. I tried calling him, sent messages but no response. I raised a ticket to helpdesk finally asking about the position of the offer. After an hour, I received a mail from HR saying that it didnot work out due to unavoidable reasons. No explaination whatsoever. I am already serving notice and said no to couple of offers because this one was positive. I am really saddened by this behaviour. I will not suggest my friends or anyone to go through the same.