Common carriers doing business in this State with whom a claim has been filed for loss of, or damage to, freight, when the carrier denies liability, or fails to notify claimant of its disposition of claims as required by law, shall return to the claimant with the letter or statement denying liability the claim and all papers connected therewith filed by the claimant or copies thereof. The carrier may retain copies thereof, which at the time of the return of such papers the claimant may be required to admit in writing to be true copies. The claimant shall give thirty days’ notice in writing to the carrier that he demands the return of all papers filed with the claim. Any common carrier violating the provisions of this section shall forfeit and pay to the party aggrieved the sum of fifty dollars to be recovered in any court of competent jurisdiction.