I own a weekly/monthly vacation rental. I rent a year in advance. My terms and agreements say any monies collected will be returned if I can re-rent. I had people tie my Jan. up and cancelled 60 days out. I was only able to rent 2 weeks. They want there 200. Dep back and I am out 1400. For the difference in rent. I am in fl. I would like to collect the rent they owe me. Is there a fs law that deals with this?