Hello, dear, it's my pleasure to serve you ~ the fitness card can be returned. No refund can be negotiated privately. You asked to return your card for your own reasons, not because the fitness center does not provide services or the services provided are defective. Handling a fitness card actually forms a consumption contract relationship with the fitness center. If the fitness center doesn't agree, you need to return the card or it will constitute a breach of contract. Of course, there is no legal basis for the fitness center to refuse to return the card. I suggest you try your best to solve the problem through negotiation, such as voluntarily assuming certain liability for breach of contract. If the fitness center refuses again and again, you can also sue, and you should get some money back, but it takes some time and energy to sue.