You need not consult anyone to remove the sun protection film(glass tint) from your car windows.The steps are too simple.
Make your car windows suffer from good sunlight for atleast 2 hours.
Slide the side glass a little bit down so that it’s top part is visible.
Now the joining b/w the sun film and side glass will be visible.
Use a small knife or tip of your finger to get rid of it’s edge.
Now gently remove the full sun-film using your two hands.
Repeat the step for all windows.
Since the window is heated,you will be completely able to remove sun film without any scratch and at no cost.