If the "dealerships" are VW dealerships, stop using them for alignments. Find a reputable tire / alignment shop that specializes in this. Use them. Using a dealership for alignments is like buying seafood at a steakhouse.
I've had my '13 aligned several times. Never any problem getting it to spec.
I would agree if you don't have active cruise control (ACC) on your car.
If you have ACC, you have to be very careful. The dealer mentioned to me, that if the back wheels need to be adjusted, then you will need to get the ACC radars re-calibrated, otherwise it will be out of alignment. Recalibrating the radars is very expensive. Luckily the back wheels did not need adjusting, and they got the alignment perfect.
Your local wheel alignment place will either not know this, pretend they don't know (as they will miss out on business), or will not ask if you have ACC altogether (play ignorant). If you tell them that you have ACC on your car, they should say that they can't do the wheel alignment, as I don't know any wheel alignment place that has the radar calibration unit, and to take it to your dealer to get the wheel alignment done.
I believe the VW dealers use Hunter wheel alignment machines. These machines plug into your OBD2 diagnostic port during the wheel alignment.