(a) Upon the execution of the contract, a copy thereof, signed by the parties, shall be delivered immediately to the buyer; provided that if the contract is signed only by one party, and the signing thereof by the other is postponed, a copy thereof, as signed by the party, shall be delivered immediately to the buyer.
(b) Until a copy of the contract signed by the parties is delivered to the buyer, a buyer who has not received delivery of the goods has the right to cancel the contract and to receive immediate refund of all payments made and redelivery of all goods traded in to the seller on account of or in contemplation of the contract. This subsection shall not apply when merchandise has been specifically ordered or custom made to specifications of the purchaser and evidence of the order is provided by the seller.
(c) Any acknowledgment by the buyer of delivery of a copy of the contract, if contained in the contract, shall appear on the same page of the contract and above the notice above the buyer's signature and the words "CREDIT SALE CONTRACT" required by section 476-3.