Datasite French Speaking Customer Service Representative interview questions

I have been interview by several people, starting with the head hunter, project manager, project team leader, and two French-speaking employees. Everything was smooth and quite easy. Although my profile seemed a perfect match, my skills, perfect knowledge of 3 languages, experience - for an unknown reason - I wasn't offered the position. Something to do with my personality I guess or perhaps I showed too much ambition when I enquired about growth possibilities.