Yamaha DTXpress/DTXplorer/DTXtreme

I ordered my DTXPRESS2 kit 3 weeks ago now from Piedog.I was told it 
would be 2 to 7 days befor dilivery. They then tell me after many 
emails requesting info,that they are waiyting for a dilivery from 
Yamaha. Does anyone know if Yamaha have some sort of dilivery back 
log.3 weeks seems a very long time. HELP. Thanks guys Paul.