What should I do if I feel my landlord is in breach of contract?

I live in an apartment that was built in 1973. I had signed a paper stating about asbestos. On 7-15-16 there was water damaged to our bathroom ceiling. I had called the office around 3am and around 4am had someone come out to release the water pressure. The ceiling and sheet rock are now exposed. They have yet to fix the damage. I had asked them around 4 times to come and fix the damage. I had went to the office today 8-15-16 to see if and when they are going to get it fixed and they said it is an outside contractor so they don't know when. Since that damage we have been having headaches and coughing that was never presented before the damage. I have also asked to be tested for asbestos and the property manager came and said everything was ok and not to worry. At this time we are spend the least amount of time in that area as possible.