Why did I send a message to my wife after I used my credit card in loans overdue?

When you applied for a credit card before, the bank reserved your wife's mobile phone number when filling in the information. When your credit card is overdue, you will call or send a message to the previously reserved phone number, or the phone number of your emergency contact is your wife's phone number. When your credit card is overdue, you will call or send a message to the emergency contact person who made an appointment before.