Do i have a suit against a company if i won a prize in a promotional contest and the company will not honor it bcuz im single???

I entered a contest online to win a brand new navigator or other prizes. Months later i recieved a call and the lady told me that i was one of the winners. She then procided to tell me how i could claim my prize and also asked me if i was married. When i told her that i was not she put me on hold for about two minutes. When she came back she told me that this contest was for couples only and then asked me again if i had a partner so i told her that i did. She then gave me all of the information about the company and how to claim my prize. She also told me that my partner had to be with me in order to claim my prize!!! Because i am single this would be difficult to do. Now she told me that i was guaranteed one of four prizes so can this company really denie me my prize bcuz i am single????