(625 ILCS 5/18c-3206) (from Ch. 95 1/2, par. 18c-3206)
    Sec. 18c-3206. Charges to conform to tariffs or schedules and orders of the Commission.
    (1) Overcharges and undercharges prohibited. No common or contract household goods or passenger carrier shall offer, advertise, charge, demand, collect, or receive, in any manner, a greater, lesser, or different compensation for transportation or for any service in connection therewith than the rates and charges specified in tariffs or schedules on file with the Commission and in effect at the time the transportation or any other service is rendered; nor shall any such carrier offer, advertise, charge, demand, collect, or receive any compensation for transportation or for any other service rendered in connection therewith where there is not in effect at the time a lawfully applicable tariff or schedule. Likewise, no such carrier shall refund or remit, in any manner or by any device, whether directly or indirectly, or through any agent or otherwise, or pursuant to Commission order, any portion of the rates or charges specified in tariffs or schedules on file with the Commission and in effect at the time; nor shall any such carrier extend to any person any discount, value, privilege, or facilities for transportation or any service rendered in connection therewith, except as are specified in tariffs or schedules on file with the Commission and in effect at the time.
    (2) Repayment of overcharges, collection of undercharges and reparations.
        (a) Repayment of overcharges and payment of reparations. The Commission may, in
    
accordance with Section 18c-2101 of this Chapter, order any carrier to pay to one or more shippers the amount by which the carrier received compensation greater than the rates and charges specified in tariffs or schedules in effect at the time the carrier rendered the transportation or other service in connection therewith. The Commission may likewise, in accordance with Section 18c-2101 of this Chapter, order any carrier other than a household goods carrier to pay to one or more shippers the amount by which the carrier received compensation greater than reasonable rates and charges as determined by the Commission.
        (b) Collection of undercharges. The Commission may, in accordance to Section 18c-2101 of
    
this Chapter, order any carrier to make all reasonable efforts to collect from one or more shippers the difference between amounts collected and the amount of compensation specified in tariffs or schedules in effect at the time the transportation or other service in connection therewith was rendered.
(Source: P.A. 89-444, eff. 1-25-96.)