chirs as working in a garage b4 window cleaning as my brother owned (spaying cars) the scratches were proberly jus covered up before the car was sold then waxed.
For wax to work properly it has to be time and time again to get a good covering, and when you do it does work

any car sprying place will not wax your car for you or keep wax anywere near it simply because it it interfears with paint when spaying it can make your car buble after repaiting it thats how effective it is if its a good quilty wax.
Dave