For some of the services, you may select "Refunds not supported" when publish the service. This restriction will be clearly displayed in the service description for customers to determine whether to purchase.
If the customer understands and accepts it, then the customer will not be able to apply for a refund, even if the service is not satisfactory or the service is not consumed, it is obviously not friendly to the customer. Under normal circumstances, it is recommended that you follow the best practice of Internet service booking and allow customers to refund, so that customers can purchase services with greater peace of mind.