First off, if you have a car accident and one shop doesn't do everything to fix it, you went to a terrible shop. I've never seen a body repair shop that didn't do all that.

But that's beside the point.

Do you honestly expect a machine shop, a place that specializes in creating or fixing or modifying pieces of metal, to find you packaging and fluff for inside the package and then ship it to your customers? Why?

I'm absolutely confused on why you would expect a company that has literally nothing to do with an area of business to just do that thing for you for your convenience.

Do you expect your plumber to also put your floors down? Do you expect your doctor to also clean your teeth or do your taxes?

This isn't an 'attitude problem', this is a 'you have irrational expectations' problem.