Section 24E. Whoever hinders or delays an inspector of the department, or a duly authorized representative of the commissioner, in the performance of his duties in the investigation of a complaint under any provision of sections twenty-four A to twenty-four J, inclusive, or who refuses to admit any such inspector or representative to any place necessary for him to enter in the performance of such duty, or whoever refuses to give such inspector or representative such information that he may require for the proper enforcement of any provision of said sections, shall be punished by a fine of not less than twenty-five nor more than two hundred dollars.