Have you or an older family member experienced predatory lending practices from a mortgage refinancing lender? Data: Mortgage refinance overpayment steadily rises with your ageIdeally, the older you become, the stronger your financial position. As an example, that could mean being quoted a refinance rate of 6.75%, not 7.76%. The CFPB is the main federal agency that handles complaints about mortgage lenders and servicers. Average rate spread (%): The average gap between borrowers' actual mortgage rate and the most competitive Bankrate benchmark.