1. First of all, if the store in Nanjing Zhenbaofang is closed, you can contact the merchant to ask for the balance of the recharge card.

2. Secondly, you can go to the local administrative department for industry and commerce to inquire about the business information of Nanjing Zhenbaofang, and ask the industrial and commercial personnel to coordinate and claim back the balance of the membership card.

3. Finally, contact the Consumers Association in Nanjing, explain your situation to the Consumers Association and help you get your membership card back.