Any tax required to be paid by a service user under the provisions of this Article shall be deemed a debt owed by the service user to the City. Any such tax collected from a service user which has not been remitted to the Finance Department shall be deemed a debt owed to the City by the person required to collect and remit. Any person owing money to the City under the provisions of this Article shall be liable to an action brought in the name of the City for the recovery of such amount.