The card is under risk control. According to the relevant information of the credit card, the abnormal receipt of the credit card MMS bill is because the card is already in a risk control state. Then, the user needs to use the card according to the regulations. For example, don't swipe your card on POS machines that skip codes, don't swipe your card at suspicious businesses, and try to keep the diversity of consumption. Only in this way can it help to lift the bank's risk control.