Okay... So I need help! I have sold a package of two properties on land contract to ONE BUYER. They have put down a 30% down payment towards purchase of homes. Unfortunately, they have not sent mortgage payments for the last two months. We are unable to verify where they live as they no longer are living in neither of the homes. (They are sub renting one of the two properties out). What is the best way to serve them notice before beginning the foreclosure process? Any advise would be appreciated...