As above, check the spots are raised, then try a small section with a clay bar. If it works, then speak to your dealer. Arrange to have the car put to a professional valeter and done properly - and for VW to pik up the bill. Don't let any VW monkeys near your car with a sponge... as they'll probably have a stanley knife blade trying to scrape the marks off!
If the lumps are under the paint, take it to a paint shop and get it confirmed, then reject the car. Make sure VW keep you on the road until a replacement car arrives.