Yes Elders who are tricked into buying instruments by pyramid schemes can ask for a refund within 7 days without any reason according to the Law of People's Republic of China (PRC) on the Protection of Consumers' Rights and Interests, and can contact the sales staff or the customer service of the company in time to provide purchase vouchers and relevant evidence to ask for a refund. MLM refers to an illegal business activity, which makes it expand its contacts in a huge hierarchical organization to gain profits by recruiting people, developing offline and selling products or services to them.