What has happened that makes you believe you are being scammed? In California people have come up with all types of ways to get around the rules. As Stacey mentioned, with more details we may be able to point you in the right direction.
What makes you think that? Are there any real estate agents involved in the transaction? How about attorneys? How long has it been and when is it due to close?
I realize I'm not in your market area, but maybe if you share some of these details, we can point you in the right direction.
Better Homes & Gardens Real Estate Metro Brokers
Are you doing a "for sale by owner?" Have you and the buyer signed a purchase agreement? Is deposit money being held by an attorney or title company? Why do you feel you are being scammed?
If you are working with an agent it would be advisable to make him/her aware of your concerns. They will be able to get you some answers.
Additional information would be helpful.
Years ago, they created all this paperwork and the Title Companies because of the scammers.
We'd be interested in the details; if everyone was educated about the latest scams, it would help.
Good luck and may God bless
Coldwell Banker Residential Brokerage