Credit card two consumption mode settings, no password consumption, password signature. If you are sure that you are stuck, just use your password to sign and spend. As long as you don't give him the verification code, he won't be able to withdraw the money.

If he asks you this, it should be a merchant card. You can log in to mobile banking by adding the card number and query, without SMS verification. You can log in to see if you can withdraw it. You just don’t know. If you don’t You can increase your limit, and codes such as 017-018 will appear. Through the code, you can know why you cannot increase your limit, how you can increase your limit, and how long it will take to increase your limit