Nicolas Cage's financial problems keep piling up -- now the Oscar winner is being sued by his ex for $13M.

Christina Fulton claims fraud and breach of contract in her complaint, saying that she's nearly $1.2M in debt due to the actor's own troubles.

"This lawsuit is ridiculous and absurd. Nicolas Cage has given her approximately three million every year for many years, even though he was only obligated to pay her six thousand a month in child support. We expect this lawsuit to be promptly thrown out," his lawyer tells PEOPLE.