I believe that your complaint should be with the manufacturers of the maps as well as the car company. The whereis based maps have had updates for several years for other manufacturers available online for about $250. The VW ones were V2 for several years and they have recently been issuing V3 which i picked up today from the Skoda dealer FOC as it didn't come with the new car. The V3 is not alot different in my area to the V2 road wise.
That being said, I have a road near where I live, that I have complained about to whereis that you can turn right at the T intersection onto the main thoroughfare however when under navigation it states that you need to turn left go to the next intersection and then make a U turn to continue your journey. Now this has been on whereis books for over two years and I am yet to see the upgraded map.