(1) A person who believes a violation of a provision of Title 13, chapters 35 or 37, MCA, or a rule or regulation implementing one or more of those statutory provisions has occurred may file a written complaint in person or by certified mail with the commissioner.  When a complaint is received, it shall be marked to show the date of receipt.  Unless the complaint is determined to be insufficient pursuant to (3) (a) of this rule, within five days after receipt of a complaint, the commissioner shall, by certified mail, acknowledge its receipt and transmit a copy to the alleged violator.  Saturdays, Sundays, and holidays shall be excluded in the calculation of the five-day period.

(2) A complaint shall be typewritten or legibly handwritten in ink. The complete name and mailing address of the person filing the complaint shall be typewritten or legibly hand printed on the complaint; and the complaint shall be signed and verified by the oath of affirmation of such person, taken before any officer authorized to administer oaths.  A complaint shall name the alleged violator, and should include the complete mailing address of the alleged violator, if known or readily discoverable.  The complaint shall describe in detail the alleged violation, and cite each statute and/or rule that is alleged to have been violated.  The complaint shall be filed together with any evidentiary material.  A complaint may be filed on a form available on request from the commissioner's office.

(3) Upon receipt of a complaint, the commissioner shall investigate, except as provided in (3) (a) of this rule, the alleged violation.  The commissioner, upon completion of the investigation, shall prepare a written summary of facts and statement of findings, which shall be sent to the complainant and the alleged violator.  Following the issuance of a summary of facts and statement of findings, the commissioner may take other appropriate action.

(a) No investigation shall be required if a complaint is frivolous on its face, illegible, too indefinite, does not identify the alleged violator, is unsigned, or is not verified by the oath of affirmation of such person, taken before any officer authorized to administer oaths.  In addition, no investigation shall be required if the complaint does not contain sufficient allegations to enable the commissioner to determine that it states a potential violation of a statute or rule within the commissioner's jurisdiction.

(4) A filed complaint and the summary of facts and statement of findings shall be public record.