Do I have cause to break my lease or file suit against my landlord?

I am currently renting a one bedroom apartment in an apartment community just outside the city of St. Louis. Back in November, I started noticing some leaks in my ceiling (my apartment is on the top floor). I promptly notified the office about the leaks, however, the leaks continued to drip and more and more water spots appeared on the ceiling. Then while I was in Ohio for a funeral in the beginning of March, part of the ceiling actually caved in from the water damage. The office was again notified and they cleaned the debris and put a tarp across the hole. They did some repairs on the roof, as there are no more leaks; however, it is now early June, and I still have a giant hole in the ceiling. I’m moving into a new place in August and I’m worried the landlord will try to have me pay for the repairs. From the information I provided, do you think I have a case to either break from the remainder of my lease or even file suit?