Other Fuel System Tank Assembly problems of the 2011 Ford F-350

The contact owns a 2011 Ford F-350 sd. While driving 65 mph, the vehicle stalled without warning. The vehicle was towed to an independent mechanic to be diagnosed. The contact was informed that the check valve in the fuel tank fractured, which cause a blockage in the fuel system. The vehicle was repaired. The manufacturer was notified of the failure. The VIN was unknown. The approximate failure mileage was 210,000.

Fuel tank collapsed. Had a 2011 f350 and the fuel tank collapsed on itself the truck is a service body, took to the dealer and they said we damaged the tank and tried to cover it up by putting a new skid plate on it. Not the case the truck has never left the pavement so whatever they recommend we replace it so we did, this is a (steel tank mind you) the next day it did it again so we took to dealer again, they said the vent valve solenoid was plugged so they replaced that and put a new tank in it next day it did it again took back to dealer sat there for almost six months and they said the ecm or pcm was bad, they wouldn't cover anything in parts so far so we paid for that too. Got it back ran great for six months and now has the same issue. Don't wanna dump more money into it as we spent close to 9,000 the time and the dealer wont cover it again. So has anyone else had this issue? the dealer says its never happened anywhere to anyone before.