Is it a pre-authorized check-in restriction? Is it still the amount that has been recorded? If it has been credited, contact the merchant customer service for a refund.

If it is pre-authorization, and the transaction is unsuccessful, the merchant will generally not ask the bank for money, and the pre-authorization will not be recorded, but will only occupy the card limit. You can contact customer service to cancel the pre-authorization. Or wait for a period of time to automatically cancel the quota.