Because children do not know the phone has a credit card number to make a purchase. After realizing that I had contact with the bank. To get help should not be charged at all.
Because children do not know the phone number has been entered on the credit card to make a purchase. After you know the subject, I will have to contact the Bank to coordinate assistance, then don't do the billing.
because children do not know that there is a place on the phone. Credit card number to make a purchase after you know that I have contact with the bank, and then ask for help do not have the money.