You can always go the lemon law route, if you break 30 days in most states you are good to go. It takes a couple months to happen. Have you tried DNA customer service ,
CustomerService@ducati.com ? I have had the same frustration with finding parts. Tends to be Ducati's most troubling area of business and the hardest part of ownership. Have you tried getting your dealer to post a vehicle off the road or urgent request, forgot the name? Sometimes they will grab one from the factory floor. Otherwise I would set a time line a and plan with your dealer and Ducati and get a lawyer to start the process by sending a letter to this fact. It is usually the first step anyways to start the lemon law process. Just not sure about the laws for the state you are in. Hang in there and push on Ducati and they will do the correct thing.