The underspray over salt/mud/water, and on the UCA's and skid plates is unfortunately an everyday occurrence, doesn't make it right by any means but just about every dealer does that when they sell those packages on trucks/cars and dont do the work pre customer delivery.
The removal process is really what gets me and is probably the biggest part of your case at this point, I can't believe they would even return the truck in that condition. Their best bet would have been telling you to go pound sand and find another shop to do it. I'd assume some mineral spirits and a stiff brush would have got the majority of that shit off without any damage. Those scrape marks are about enough to make ya sick. Nothing short of contacting a lawyer will solve this in a positive manner, personally i'd cut off all communication with the dealer-- if they are willing to release a truck in the condition they did and call it job done they clearly have 0 morals and are gonna do whatever they can to screw you over.
The removal process is really what gets me and is probably the biggest part of your case at this point, I can't believe they would even return the truck in that condition. Their best bet would have been telling you to go pound sand and find another shop to do it. I'd assume some mineral spirits and a stiff brush would have got the majority of that shit off without any damage. Those scrape marks are about enough to make ya sick. Nothing short of contacting a lawyer will solve this in a positive manner, personally i'd cut off all communication with the dealer-- if they are willing to release a truck in the condition they did and call it job done they clearly have 0 morals and are gonna do whatever they can to screw you over.