When you say VW, do you mean VWoA or the dealer? A call to VWoA should result in them putting you into a priority list for the new motor, a full detail of the car to deal with the water, and a buy-back if mold becomes a problem due to the moisture inside the car due to the defect. Of course how you approach them affects the outcome. If you're beligerant, it will get you back the same.
I'd suggest you call VW customer care instead of dealing with the locals.