Sometimes, new vehicles get bumped around before they get off the boat, railcar, etc., and there is a group of people there that finish the Make Ready Process, so the cars can run, and fix any body work, etc., that happened in the trip, so the vehicle is ready to sell..
They dont usually mess up like this....
No matter what you used, especially if you did it by hand, you should have not rubbed through the clear coat - ever -
I would say that something happened here either at the factory and it somehow got through; perhaps your entire truck got shortchanged on paint along with a bunch of others, or a Factory Fix after it got off the delivery conveyance whatever it was, was done by drunk clowns...
If they give you a bunch of hooey, I would get a lawyer to write a letter on his letterhead telling them you are asking them to take this back under the Lemon Law, and maybe you will buy another one that is not Factory Defective as this one appears to be..
Good Luck !
Dan F