1. The ATM itself is out of order. If this happens, we must be careful. Some criminals may set a trap to steal money, which may cause serious economic losses.

2. The problem of bank cards. If the card whose magnetic stripe is invalid or has been reported lost is inserted into the ATM and recognized by the system, it will also face the risk of swallowing the card.

3. Improper customer operation. Everyone knows that three password errors will cause ATM machines to swallow cards.

Of course, in addition to the reasons summarized above, there is another reason. Overtime operations (such as not picking up the card within 20 seconds to 30 seconds) will also be swallowed, which many people don't know.

Then in this case, if the credit card is used normally and has not expired, it will not be closed under normal circumstances, not to mention that it can be transferred after 15 days. In other words, the credit card may be in arrears, so it is recommended to pay back the money in time to avoid overdue and affect personal credit information.