First, 299 should be the deposit

If the credit card 299 is not paid when the machine is processed, it is almost certain that this is the deducted deposit, also called frozen funds, also called service fee. It is the transaction volume assessment set by the payment company during machine processing. This deduction must be made with the user's prior knowledge, and the deduction is reasonable and effective.

ii. Specific refund rules

Whether the frozen deposit can be refunded in full needs to specify the transaction evaluation rules. Generally, within the specified time, you can get a refund after brushing the specified transaction amount and reaching the standard. The specific assessment time and transaction amount can be asked by the person who handles the machine. If you are not fooled when handling, you should make a detailed introduction before handling.