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And how to solve this situation? The merchant can immediately re-brush a POS machine (0.01 yuan can be) or do the settlement, as long as the POS machine to re-network transmission of information.
The POS machine will send the last error message, and the card issuing bank will return the previous transaction after receiving the message. The cardholder will also receive a text message returned by the bank. The bank will refund the money within 48 hours, and will generally refund within a few minutes after receiving the new information. If there is no timely refund, the merchant can explain to the guests, it is not recommended to advance! If you don't have a refund immediately, you can contact the person who paid the company. 
The POS machine swiped the card and the transaction was not successful. What about the money?
Normally, when we use the card, we will receive a bank debit memo after swiping the card. Then the merchant's POS machine will issue a small ticket, and the transaction is completed. Occasionally, after the cardholder swipe the card, the bank debit message was received, but the merchant's pos machine did not issue a small ticket, indicating that the transaction failed. Where will the money go?
First of all, let me tell you how the process of swiping the card is: POS card swipe - information is transmitted to the UnionPay Center - the issuing bank (the bank where the bank card is located) - return to the UnionPay Center - return to the POS machine to issue the ticket. If the above situation occurs, it is likely that there will be problems in the return of this link. As a result, the data was not transmitted back to the POS machine, but the POS machine issued a request for deduction, so the billing information of the acquiring bank appeared, but no transaction was successful. Money has also been in the card issuing office, not to the merchants.
Cardholders don't have to worry too much, they can let the merchant write a certificate. If you do not receive the payment within 48 hours, first confirm the situation with the merchant. In addition, you can contact the issuing bank and tell the bank that the transaction was unsuccessful and request a refund. Generally speaking, the bank will refund the money after confirming the situation.
The card position is handsome, don't panic when you finish the problem. As long as you calm down, in today's situation, the problem can be solved!