The Commander of the Unit to which the subject of the commendation or complaint is assigned shall ensure that a letter is sent to the member of the public acknowledging receipt of the input. The letter shall be sent regardless of whether the public comment was made in person, by telephone, by electronic means, or by mail. The letter shall be accompanied by a receipt copy of the Service Comment Report form unless it is verified that it has already been given to the member of the public who offered the comment.