Hua Xia Credit Card will not be unusable for no reason. You can first find out the reason from the credit card itself. It may be that the magnetic stripe on the back of the card may be degaussed or the card may be damaged. If this is the case, you only need to You need to apply to Hua Xia Bank to change your card.

The second problem is whether the available limit of your credit card is insufficient. If the limit is insufficient, the card cannot be swiped normally. In the end, your bank may have frozen your credit card due to overdue issues. If this is the case, you need to pay back all the outstanding balances. After explaining your last resort to the bank, the bank will make adjustments to your credit card as appropriate. Thawed. In addition, there are some merchant reasons. When the card machine is in use, the line is busy, or malfunctions, or itself malfunctions, and the transaction information transmission cannot be completed.