Open a free shop online and price the goods in the shop at will. Then bind your bank card A to the store payment tool, and then overdraw your credit card B to "buy" a product from your online store with another account. It should be noted that the actual transaction amount of the same credit card cannot be too large, and it is best to buy it several times with several credit cards, and use credit cards from different banks. Do not use the same IP address for transactions between different registered accounts. If it is a large transaction, the seller must be dead for 24 hours before clicking "Confirm Receipt".

Method 2: First recharge with the recharge card, and then cancel the number.

At present, China Mobile has launched the binding of bank cards and numbers in various places, and a short message can instruct banks to recharge their phone bills through UnionPay. In this way, as long as you build your own business hall, you can handle the business of cash refund of phone bills. Go to the business hall to swipe your card and buy n recharge cards. After the mobile phone number is charged, you can take your ID card to China Mobile Business Hall to cancel the number, and you can directly refund the cash.

Method 3: Refund the ticket one day before departure.

According to the regulations of China International Airlines or China Southern Airlines, as long as the first-class ticket is refunded 24 hours before departure, it will be refunded in full in cash, but it does not include the first-class ticket changed due to the missed flight. These two airlines can easily buy F-class tickets as long as they swipe their cards in the local self-built business hall, and then refund them in advance to get a refund.