(1) Upon written request from the buyer, the holder of a retail installment contract shall give or forward to the buyer a written statement of the dates and amounts of payments and the total amount unpaid under the contract. A buyer must be given a written receipt for any payment when made in cash.
(2) After payment of all sums for which the buyer is obligated under a contract, the holder shall deliver or mail to the buyer, at the buyer's last-known address, one or more good and sufficient instruments to acknowledge payment in full and shall release all security in the goods or in any collateral security.