Accenture Intern interview questions

I had three interviews - a behavioral, a case, and a confirming interview (which was basically a second behavioral but more relaxed). All of the interviews were pretty much what you would expect from a consulting firm.

They asked me questions related to marketing when the job interview was for a technical consultant role, they asked me about my nationality and I told them that I hold the following password, so one of the interviewers said that your family name indicates you are from another country so I told him true but I hold the following passport and from that point I started being attacked by unrelated questions and at the end of the interview this guy started telling the managers that Oh dont believe him I know his actual nationality