Something like that should have been stretch or shrink wrapped then foam and then the box. Even if air shipped the vibrations in cargo will scuff the surface. No excuse for loose hardware either.
We made lots of different products for customers. There were always shipping trials to see if parts and packaging would hold up. We would ship from S.C. to California and back and review the pack.
We made monitor stands for Compac Computer when in business. We stamped the parts did the MIG welded assembly sent to the powder coating shop and after paint they installed the plastic feet, scuff pads on them label on product. They then placed in plastic bag and inserted into packaging with the multitude of instructions in every language. They were sent around the world to multiple distribution warehouses and then to the final customer. Never any complaints.
Those covers probably need to be in plastic then Styrofoam end caps put on to suspend it in the box to prevent scuffs or damage from hits. You can't just put it in a box and send.
When you do get in touch with them be respectful and they will you also.