ive rang them about 3 times since aug 17th (latest being yesterday), but i will probably be buggin them much more nearer the build week!
I'd just ask them for the comm number, which for me is six digits. I wouldn't worry, it's not harrassing them, it shows geniune interest (you don't ask, you don't get). At the end of the day you are the customer, they are there to provide a service. It also keeps them on their toes.

I've just rung VW Customer Care (08000 833 914) for an update on mine and it's still scheduled for week 48 (but not yet confirmed).
