Arbourstone,
I had a very similar experience where my dealer was repeatedly lying or grossly incompetent and not forthright. I noticed severe wear at 750 miles, asked them to check the alignment as the steering, bumpsteer, and tramlining were also miserable. They said it was "fine", but refused to let me see the alignment sheet when I demanded it; and accussed me of swapping old tires onto my new truck

It took them two weeks more to get the replacement tires, at which time the tires had disintegrated to completely bald on the outer half; hence no way they could deny there was something severly messed-up with the frame or alignment. Second alignment check showed that the "toe in" was significantly out of specification, as I told them it would be. Bastards.
I took pictures along the way and related the above to LRNA with the names of those involved with the dealership; but I'm still ******-off.