Deposit for lease

Five Towns Nissan

600 Burnside Avenue.

I deposited A $1000. for leasing a Nissan Murano. I had a problem with my insurance and told the dealer i would not be able to get the car and asked for my deposit back. I was told that they could not credit my credit card account and that I will be issued a store credit. I have never heard such madness in my life. Please help me get my deposit back.