Bloomberg Junior Account Payable interview questions

I took the application through a career agent which took me 3 weeks till they confirmed me the date of the interview. I was first introduced to the lobby on first floor which was absolutely stunning. Typically the food court, kind of like an IKEA food corner where people drop by for snacks or drinks but they are all free. I waited for about 15 minutes. Supposedly the interview should be held at 15:00 but they were like 10 minutes late to come down stair and get me. I interviewed in the London office with 2 interviewers, a team leader and her subordinate, both were eastern European. They didn't ask any competency based questions but more about my CV and my previous company/job. It seemed that they didn't have a set of questions prepared but asked me whatever that jumped to their mind, in which I felt a little bit unprofessional. I must say I didn't sleep well last night and kind of messed up with the "first 30 seconds" and left an "ok" impression towards the interviewers. During the interview, I felt like they aren't interested on me and want to end the interview asap (i saw one of ladies kept looking at her watch discretely). It would be a miracle if I got the offer so God help me.