"Notice to the Buyer
Do not sign this before you read it or if it contains any blank spaces. You are entitled to an exact copy of the paper you sign. You have the right to pay in advance the full amount due."
A copy of any such account shall be delivered or mailed to the retail buyer by the retail seller prior to the date on which the first payment is due thereunder. Any acknowledgment by the buyer of delivery of a copy of the account shall be in clear and conspicuous type and, if contained in the account, shall appear directly above the buyer's signature. No account shall be signed by the buyer when it contains blank spaces to be filled in after it has been signed. The buyer's acknowledgment, conforming to the requirements of this subsection, of delivery of a copy of an account shall be presumptive proof in any action or proceeding of such delivery and that the account, when signed, did not contain any blank spaces as provided in this subsection. A revolving account shall be presumed to be signed or accepted by the buyer if, after a request for a revolving account, such revolving account or application for a revolving account is in fact signed by the buyer or if such revolving account is used by the buyer or if such revolving account is used by another person authorized by the buyer to use it. The revolving account is not effective until: the buyer has received the disclosures required pursuant to the federal Truth in Lending Act, 15 U.S.C. Section 1601, et seq., as amended; the buyer or a person authorized by the buyer uses the revolving account; and the seller or its assignee extends credit to the buyer for transactions on the revolving account.
OCGA § 10-1-4