If you want to unlock the Bank of Communications credit card after it is locked, you need to take different methods according to the different reasons for the lock:

If the user is locked because he entered an incorrect password, he can directly bring his ID card and credit card Go to the bank counter to apply for unlocking.

If the user is locked due to overdue repayment, the user must first pay off the outstanding balance and then call the Bank of Communications customer service hotline to apply for unlocking. If the user fails to return it in time, he or she can negotiate with the bank to apply for an extension of return. As long as the reasons given by the user are reasonable, the bank will generally agree.

If the user is locked due to a risky transaction, the user can inform the bank of the reason and prove that the transaction was made by himself/herself, and the lock will be unlocked after the bank's review.

If the user's credit card is frozen by the court and then locked, the user has to wait for the lawsuit to be resolved before going to the bank to apply for unlocking.