A casino sports wagering licensee shall investigate diligently all authorized sports bettor complaints within five calendar days from receipt. Where a complaint is made to commission staff, consistent with existing commission authority, the commission shall have unfettered access to all information related to authorized sports bettor wagers and application of this Part or house rules as such information relates to assisting in addressing authorized sports bettor complaints. Any authorized sports bettor complaint that results in a dispute in excess of $5,000 shall be brought immediately to the attention of the commission by the casino sports wagering licensee.