I earlier booked Swift ZDI, but due to the strike in Manesar plant and no specific delivery. I found the best way of dealing with wwaiting period.
I cancelled Swift and bought PUNTO. :-)
After cancellation in Oct-Nov 2011, I dint get my refund, but received call from dealer in Feb 2012 that the ZDI I booked is not available and I can have VDI.
On that I informed him that I have already cancelled the Swift and eagerly waiting for my refund. The SE who booked my car left the dealer and new guy knew nothing.