Welcome to the Forums, Pat!

Less than a month out of warranty? Keep in mind, all the time the truck spent in for service for warranty work is deducted from the warranty period. You may still be under warranty.

With that in mind, have the dealer entertain the idea that the root problem has been misdiagnosised all along. If that's the case, they own it. Your history is unique, and should have been addressed properly much earlier on. Turbo failures do happen, but they are almost unheard of. So rare, it's not an issue we often (ever) discuss. A broken crank is even less common. Something else is at work here, and it's on them to find it. Insist on it, and get your area representative involved.