You can change your mind at any time before you sign a contract. Also be aware that the Truth in Lending Act allows you to change your mind within three (3) days of signing a contract that uses your home as security. You need to write a letter to your lender telling them that you are exercising your rights under the Truth in Lending Act. Send this request by certified mail to the lender, and keep a copy for your records.
If you think you have become the victim of predatory lending, call the Legal Services for the Elderly Helpline at 1-800-750-5353 to talk to an attorney for free.