1. Communication problem: information transmission failed due to poor communication or staff error. Contact bank customer service department or credit card department to explain the situation and seek solutions.
2. Qualification: The bank checked the credit score, income certificate or relevant documents, and it did not meet the conditions for applying for a credit card. Consult the bank staff to understand the specific reasons and discuss further solutions.
3. Delay in approval: Credit card applications need longer time to be approved and processed, which involves internal bank processes and approval procedures.