Can deleted text messages be pulled out by mobile companies?

The mobile company will provide users with communication records, but only the telephone number of communication, short messages and other contents are not provided, and even if you know the telephone number of your communication, the mobile company will not disclose personal information such as the user's name of this telephone number, so you can rest assured that it is impossible for ordinary people to find the contents, except for public security, national security, inspection organs and other state departments, which must be approved by official documents at higher levels. Note: I am an employee of a mobile company.