It is a violation of this chapter if the applicant, or licensee, has rejected, without reasonable cause, or has refused to accept, without reasonable cause, any farm product which is bought or contracted to be bought from a producer by such applicant or licensee, or failed or refused, without reasonable cause, to furnish or provide boxes or other containers, or hauling, harvesting, or any other service which is contracted to be done by the licensee in connection with the acceptance, harvesting, or other handling of such farm product which is bought or handled or contracted to be bought or handled.