1, you can check the service number of "WeChat Pay".

After using WeChat to pay, we will receive the "WeChat Payment Voucher" from the official WeChat account of "WeChat Payment", which includes the payment amount, payment method, product details, transaction number and so on.

2. You can pay attention to the official WeChat official account inquiry of relevant credit cards.

You can follow the official WeChat official account of your credit card on WeChat. When using a credit card, you will receive a "transaction reminder" from the official WeChat of the bank credit card in real time, including the transaction time, transaction type, transaction amount and other information.

You can find it on the credit card bill.

Credit card bills can be viewed through online banking or received electronic bills, with a lot of information, including: transaction time, merchant name, commodity name, transaction amount, etc.