I and my wife live in a house that her son sub lease in south carolina?

he signed a promissory note of 5,000.00 dollars payable in 395 days or live rent free for 12 months on the money orders in the memo it reads pre payed rent 12 1/2 months this make him our land lord right leaglly right because now that were 7 months in about half of the money + to rent he want to shut the lights and for us to move out my wife and i are disable my wife more so than i any one have advice