Okla. Admin. Code § 165:14-7-3
Each charging station operator operating a public charging station shall make a full and prompt investigation of every formal complaint made to it by its consumers, either directly, or through the Commission after the consumer or other interested party has contacted the charging station operator. Each charging station operator operating a public charging station shall keep a record of all formal complaints received, which record shall show the name and address of the complainant, the date, the nature of the complaint, and the adjustment, or disposal made thereof, which record shall be retained for examination by the Commission. For purposes of this Section, a formal complaint is a written communication by a consumer or other interested party to the charging station operator operating a public charging station that prompts an investigation by the charging station operator. All records of formal complaints shall be retained for a period of at least two (2) years from the date of final disposition.
Okla. Admin. Code § 165:14-7-3