according to VW customer services you're better off ringing your dealership as they can then contact VW sales where the general public can't.
That's balls, everytime I've called VW customer support they've had to go off and talk to sales themselves. If you call your dealer you know as well as I do they won't follow it up as its not a priority to them (ok, I'm generalising but most are like this).
The best place for contact is twitter, then they'll ask you to email their twitter team.
This. For whatever reason information from the dealers is super unreliable it seems. Responses range from giving estimated BWs from 24-43 with no explanation why there is a difference, stating you can't have a BW, that no GTD is to be built before 32, that they have no idea why delays, that its the sunroof, no its the DSG, you'll get them July, no August, no October if you are lucky... etcetera and so on and so forth.
Not saying the twitter method is better so far, but it does seem a lot more consistent. Also they are an actual customer service team, whereas the dealers are essentially just a sales team who have already made a sale... its a lot more work for them to start investigating these issues.