Why do postal text messages charge 2 yuan money?

Did the staff tell you what it was when you opened the account? If the one who deducted 30 yuan, it should be Yinxintong, which is short message service. Do you deposit 100 yuan in your account every day? If not, your small management fee will be deducted. If there is no service, there are only two charges, because online banking, mobile banking and telephone banking are all free. Think about it. Did you open anything else? There is also a card, deposit 150 yuan. What card is it?