Why does my mobile phone card always book its own business? I just received a short message today, saying it was about the virtual network. Then I checked it and sent a message online to unsubscribe.

You may meet a liar. The information number you sent to the other party to unsubscribe may not be the operator's number. Maybe your phone card didn't subscribe to the service at all, but the liar deliberately sent you a message saying that you subscribed to the service, and then gave you a number to cancel the service. Only when you reply, you really subscribe to the service, so you'd better call the operator's customer service to see if your mobile phone number is your own service, and then open what service, and then send a text message to cancel the service.