Unfortunately date of ordering and build week dates have nothing in common as you have loads of other variables to take into consideration.
The dealership you bought from might only be allowed to order 3 GTDs a month and they have already sold a few months allocation in advance already. Unfortunately everyone ordering a Golf doesn't just go onto an in-sequence waiting list. That would be far too easy

Plus a car may already be in the system.
Or certain extras can hold up orders.