My debit card of China Bank opened online banking and SMS service, which has been useless for more than a year now, but in recent months, the bank wrote that I owed more than 100, asking for an explan

My debit card of China Bank opened online banking and SMS service, which has been useless for more than a year now, but in recent months, the bank wrote that I owed more than 100, asking for an explanation. It is estimated that your debit card is charged by online banking and SMS service, which is why you owe so much. You can cancel it if you don't use it often. You wouldn't deduct so much. Remittance by online banking is cheap, and you can also pay the mobile phone fee through online banking, which has many functions. If you don't need online banking, just cancel it. If you explain, you'd better take your card and ID card to the bank counter, and they will definitely give you an accurate answer.