"My lender has been charging me less interest than what is listed on the original loan agreement. What should I do? "
"I bought a car three years ago, financed at a nine percent interest rate, and have been paying on time every month. The lender called me to tell me that they had made a mistake and only been charging me six percent this whole time.
Does this mean that they are going to expect me to pay them all of the interest that they didn’t charge me for the last three years? What are my options to deal with this?