80% of the bank card number error is the routine of these platforms, that is, there is no problem with the bank card you entered. You may be too nervous to notice the problem. There is no evidence left, and the card number you entered is probably fine, but it is not a formal platform at all, and he has not made any money at all. Then he told you that he was sorry, the bank card number was wrong, and the money had been typed out. There is nothing we can do, and we even kindly tell you that we can give you some time. We are really sorry about this, but we can lower the interest rate system for you. In fact, they didn't make any money at all, just lying to you.
When withdrawing cash, it is bound to the corresponding platform. Everyone knows that binding bank cards requires the verification code of mobile bank cards. This verification code is on any platform. You have to bind the bank card. The official of the bank will send you a verification code later. Only by entering this verification code can the bank card be bound. You don't need a verification code when entering, and you don't display the name of your personal bank card or the bound mobile phone number. Then don't you think there is something wrong with this platform? Regular platforms don't do this.
Because serious loans have to go through the above review, when you bind your bank card, you will see the name of the manager of your bank card and even the mobile phone number of your bank card. You have to send a verification code to really bind. With your routine, it's probably that he didn't play with money at all, and you didn't miss the bank card, but he played wrong and asked you to pay back the money. In fact, legally speaking, you are not fully obligated, because you have not received the money at all, but he may threaten you to pay back the money by harassing you with text messages.