If the enterprise fails to inform consumers in advance, then according to the relevant provisions of the Consumer Protection Law, operators and consumers should follow the principles of voluntariness, fairness, honesty and credit; Consumers should have the right to know, otherwise it is illegal.
If the balance cannot be refunded, and there is no agreement in the membership card, according to Article 21 of the Administrative Measures for Single-use Commercial Prepaid Cards (Trial) issued by People's Republic of China (PRC) and Order No.9 of the Ministry of Commerce of People's Republic of China (PRC), the card issuing enterprise or card selling enterprise shall provide card refund service in accordance with the articles of association or agreement of single-use cards.
Legal basis: People's Republic of China (PRC) Consumer Protection Law.
Article 48 A business operator who provides goods or services under any of the following circumstances shall bear civil liability in accordance with the provisions of other relevant laws and regulations, except as otherwise provided in this Law:
(a) The goods or services are defective;
(two) the goods do not have the performance that the goods should have and are not explained at the time of sale;
(three) does not meet the commodity standards indicated on the commodity or its packaging;
(four) does not meet the quality conditions indicated by commodity descriptions, physical samples, etc.;
(five) the production of goods explicitly eliminated by the state or the sale of invalid or deteriorated goods;
(six) the number of goods sold is insufficient;
(seven) the service content and fees are in violation of the agreement;
(8) Deliberately delaying or unreasonably refusing consumers' requests for repair, rework, replacement, return of goods, replenishment of commodity quantity, refund of payment for goods and service fees or compensation for losses;
(nine) other circumstances that harm the rights and interests of consumers as stipulated by laws and regulations.
Business operators who fail to fulfill their obligations to protect consumers' safety and cause damage to consumers shall bear tort liability.
Article 49 Where a business operator provides commodities or services, causing personal injury to consumers or other victims, it shall compensate the reasonable expenses for treatment and rehabilitation such as medical expenses, nursing expenses and transportation expenses, as well as the income reduced due to absenteeism. If it causes disability, it shall also compensate the disabled for living AIDS and disability compensation. If death is caused, funeral expenses and death compensation shall also be paid.
Article 50 Where a business operator infringes on the personal dignity, personal freedom or the right to protect consumers' personal information according to law, it shall stop the infringement, restore its reputation, eliminate the influence, make an apology and compensate for the losses.