1. Never trust any non-bank official telephone.
2. There is no need for any mobile phone dynamic password in the process of quota adjustment.
The bank clerk will never ask you about the expiration date.
4. Any phone call falsely claiming that it can help to adjust the amount is fraud. Banks have a strict examination and approval system, and there will be no different examination and approval results because of different callers.
5. If there are business needs such as increasing the quota, please handle them through official channels such as bank WeChat, online banking and customer service hotline.