Love Car Wash Card expired and not used up.

1. Negotiate with the merchant to return the card to make up the money and return the balance in the car wash card.

2. Settle the balance in the car wash card and continue to use it in the car wash card next month. After signing the contract with the merchant, if the merchant has not used up the card, he has the right to ask the merchant to refund it in time. If the merchant fails to deal with it in time, causing further losses to the user, the user can ask the merchant to bear the corresponding liability for breach of contract through litigation.