Impact sound

[atl2]

Hello,
My wife and I moved into a third floor appt in a townhouse about two months ago. We discovered on the second night, when the neighbor came home, that there was no insulation between the floor/ceiling. It feels like the man and his dog are walking right through our room. We hear every footstep, dog play, chair mouvement...
It is pure hell. My wife is eight months pregnant and cannot sleep. The neighbor has been contacted and is "very sorry", feels we are "lucky he should be away most week ends" and has 80% of his floor covered.
Management is useless and rude. The broker is trying to help out as she feels guilty.
Getting out with our deposit seems likely but how do we get our broker fee back? they did pawn us a faulty product.
We are thinking of getting lawer help as we feel you cannot treat people like this in general and a eight month old pregnant woman in particular.
I welcome any experience, advice...
Thanks