Make and model TV?
Do you have the User Guide/Manual?
Most TV's have some "Menu" options wherein the end user can access the configuration screens to enable or disable various functions. Or provide specific configuration information/settings.
No specific direction to offer at this time.
However, access the TV's menus, look for networking, and hopefully you will find where and how to disable wireless.
PS. Regarding the MAC - take a close look at the labels on the TV or any "about" screens, etc.
The MAC should be listed accordingly.