My new rear bolts where definitely a very similar thread pitch to the factory ones. I did specify when I ordered that it was getting installed on a 2021.
That makes total sense. Thought maybe you just looked over it. No sweat. IIRC, you had issues with Will/A90 Shop in the past, but he's always been great (and just hired some help), maybe you can get that issues resolved with him.
I 100% agree with this. I think it's completely ok for the repairs to be declined. There's no question there. The probably I see is that someone went out of their way to make sure this claim was denied before even attaching the scan tool. Pay to play, of course. But, just.. ya know.. let things...