Why does your mobile phone have spam messages every day? The mobile company said it couldn't be turned off. Why?

Spam messages are because your mobile phone leaked the number when surfing the Internet. Some spammers will send some spam messages to his known mobile phone number through the group sender. Mobile is an operator, but it is responsible for communication, but it has no right to monitor your messages, because it violates your privacy, so it doesn't know that they are harmful messages, let alone that others make money by sending text messages. How could it shoot itself in the foot? If you have a smart phone, I suggest you install one.