1. Incomplete or incorrect credit card information: ensure that the credit card information entered is correct, including card number, expiration date, security code, etc. Incomplete or incorrect information will lead to the failure of deduction.
2. The transaction amount exceeds the limit: the bank has set a limit for overseas transactions. If the transaction amount exceeds the limit, the bank will refuse the transaction and deduct the money. You can contact the bank customer service to find out the specific limit.
3. Abnormal credit card status: Abnormal credit card status, such as expired or frozen, also leads to transaction failure. Make sure the credit card status is normal.
4. banking system failure: sometimes the banking system fails, resulting in transaction failure but deduction. You can contact the bank customer service to understand the specific situation.