Sorry to hear about your luck.
For what it's worth, this happened to A LOT of people. (Not all owners, but many.) Be sure to search the early pages of the original thread for this bust, where you'll see a lot of posts pertaining to this. The rumors were that the initial batches weren't primered properly, and this was the end result. Needless to say, a lot of owners were not happy. To be honest, that's the biggest reason why I never bought this bust, for fear this would happen to my own.