The credit card of Shanghai Pudong Development Bank came to the door to withdraw cash, but the amount of the card received did not change, and it was cheated by the salesman. No third-party company is required to withdraw cash from credit cards, and no third-party company has the authority to handle it. The person who comes to the door is a salesman who pretends to be a bank employee to sell pos machines and credit cards to earn commissions, not a bank employee.