Minus my cut.

We sold our old home about 2 years ago. Since then, we have been getting calls and letters from many different people wanting to give us 1,200 dollars that is owed to us by the government. But there is a catch, they want their cut of the money owed to me. I'm very confused about the whole thing and was hoping somebody out there would help shine some light on this subject. The first 5 - 10 people I just figured were a scam but now we have had like 20 people contact us on this. I would love to get 1200 dollars these days but it is weird. They don't want money up front either.