If vendor single interest or collateral protection coverage is canceled or discontinued under RCW
48.22.125 (1) or (2), the amount of unearned premium must be refunded to the borrower. At the option of the secured party, this refund may take the form of a credit against the borrower's obligation to the secured party. If the refund is taken as a credit against the borrower's obligation to the secured party, the secured party shall provide the borrower with an itemized statement that indicates the amount of the credit and where the credit has been applied.