Any person against whom a penalty as set out under the Law has been decided upon, may submit a grievance in writing before the Authority within fifteen days of the date on which he is notified of the decision in writing. The Authority’s decision to reject a grievance shall be final, but may be challenged before the Competent Court. A lack of response to a grievance within thirty days of the date of submittal thereof shall be deemed to establish that that the grievance has been declined.