What do I do when I sign a lease for a place advertised as move in ready and it is anything but the case?

Our landlords are basically taking advantage of us. We moved in short notice. However. The place was advertised as "Move in ready" When we arrived the walls were stained. The carpet was dirty. Place needed a deep clean bad. It was promised that it would get done and never did. After we signed of course. They will not give us a copy of our lease ether. Pipes froze which the management told my girlfriend she would have to wait until the owner made a decision. Our hot water heater is messing up. First day we moved in the washer was already broke. 1st use. Holes in drywall we found. The house isn't heating properly. I work in the middle east so my girlfriend is dealing with all of this and they are taking advantage of us. I was going to get a lawyer in Denver and it turns out they have the best representation on their side. What can I do. I know we have evidence and people who can be witness.