I have no legal background so I'm not sure if I can be of much help, but I thought I'd offer.
I'll be in Japan in October and could take a quick trip over to China if it would actually accomplish something.
Meet with the consumer council or talk with the police. whatever.

I have an order with BA from December for 10x X1s, got nothing.
Asked for a refund in June and numerous times since, so far nothing of course.