Don't rent off these

Stopped half of our bond because of the damp in the flat we rented off them,Told us it was "Our Lifestyle" that caused the damp,Well it was a ground floor flat with no small windows,so what are we supposed to do ? leave a big window open all day while we were at work ?.Also had red paint on carpet in Living Room?kitchen,They promised us a new carpet 1/2 months after moving in,we moved out 2 years later with the same stained carpet still there.