If the Department fails to mail notice of action on a claim within 6 months after the claim is filed, the claimant may consider the claim disallowed and file an appeal with a hearing officer within 45 days after the last day of the 6-month period. If the claimant is aggrieved by the decision of the hearing officer on appeal, the claimant may, pursuant to the provisions of NRS 360.245, appeal the decision to the Nevada Tax Commission. If the claimant is aggrieved by the decision of the Commission on appeal, the claimant may, within 45 days after the decision is rendered, bring an action against the Department on the grounds set forth in the claim for the recovery of the whole or any part of the amount claimed as an overpayment.