(a) The dealer must maintain, for a period of at least three years, for each consumer with whom business is transacted, a record containing the following information:
(1) all documents required by or described in this subchapter including:
(i) written estimates;
(ii) written authorizations of the estimates;
(iii) written notifications of delays in delivery dates;
(iv) final bills and invoices; and
(v) written waivers regarding the return of replaced parts.
(2) any document signed by the consumer or the consumer's agent, including copies of all correspondence between the dealer and the consumer regarding a product for the disabled.
(3) manufacturers' warranties or guarantees for repaired or serviced products, as applicable.
(4) dealer's warranties or guarantees for repaired or serviced products, as applicable.
(5) originals or copies of medical or other prescriptions for products for the disabled filled by the dealer for consumers.
(6) when estimates or authorization to commence work were oral:
(i) the date(s) and time(s) of such conversations;
(ii) the name of the consumer, or the consumer's agent, authorizing the dealer to commence work;
(iii) the name of the dealer or the dealer's agent receiving the oral authorization to commence work.
(b) The records referred to in this subchapter must be maintained on the licensed premises for a period of at least three years and be made available upon request to the commissioner, the commissioner's designee or other law enforcement officials.