My Unicom mobile phone card received a text message saying that it has entered the lock-up period. How to recharge the phone bill?

"Generally, the mobile phone account has not been paid for a long time, or the account is in arrears, and the account will enter the recharge period, which lasts for 90 days. If there is no payment during this period, the account will enter the lock-up period. The lock-up period is 30 days. During this period, self-service payment is not supported. You need to bring your ID card and card to Unicom's own main business hall to inquire about unlocking and paying. If it is not unlocked for more than 30 days, the number will enter the deletion period, which is equivalent to the logout state and cannot be restored to normal use. "