They must have told you why they would not pay the money-that could be important to anybody on this site who might like to advise you. For example, if you were caught entertaining two students in your bed, it's probably best to put it down to experience; however, if Troy caught you with his wife, that might not be contrary to your contract. At the moment you are just making a statement "they fiddled me"

I'm not trying to be perverse or dismissive but you shouldn't accuse without saying why you were cheated.