Your question is a little confusing, because people don't usually refinance right before they move. If you just want to sell the house, contact a real estate agent to help you. He or she will be able to advise you about what will be required to pay off the mortgage.

Wells Fargo has a reverse mortgage program. It allows the homeowners to borrow money and free up cash on their home. There is not a mortgage payment.
It has cost and restrictions that you will need to evaluate depending on their needs.
Call Well Fargo Mortgage or you can see the basics at their website.
Bill