How to Condemn a house you are renting?

Let me start off with Wow...I am renting a home in Alabama from a couple who are in their late 70s maybe early 80s.I wasnt going to rent this house but I did and I am now here the couple couldnt clean it out from the previous tenants due to their health. They said what ever work I did they would either pay me for it or take it off rent. Now mind you never was i told that bats were in the attic and this house was built about 60 years ago nor did I know that the bat poop wasnt cleaned up and mold in the bathroom and what I think it bat poop comeing through the ceiling from the attic way. The house was infested with roaches but i got them taken care of and as of now we dont have them, But ever since I moved here I have been sick and I have a dog who is also sick caughing and all there is cracks all in the walls and the stove and refrig tilts its not level.The water I just replaced cause the old one was leaking and the floor is sunken it badly and where the toilet sits it feels like it going to fall through the floor. I havent had heat this whole winter and I sent a certified letter to the landlord and now he tells me he wont fix the heat and I can move...I dont want someone else to go through this what if the next person has kids? can some one please Help?