Dunno

Me: So, where are your cameras?
Girl: Dunno. There is one in the front and another at the back of the office
Me: Which one is not working?
Girl: Dunno. I think its the one on the office
Me: OK, let's go have a look

[I asked he to bring me a ladder and when I climbed up...]

Me: Do you know who was working up here recently?
Girls: Dunno. We all never see anything
Me: OK, here is your problem. Someone pulled the cable too hard and it was yanked out of the circuit board
Girl: Waaa...... So, how much to repair or replace, ah?
Me: Dunno. I ask my girl to quote you lor