I had that done to my New Mk5 Polo It was a Face Lift Model 6n2 I think...
It was at college so what could I put it down to mainly jealousy, the next time i put it back on I put razor blades on the back of it pointing out in all directions but couldnt be seen, it never happend again though...
Feel your pain though as you have to go through the hassel of getting it all sorted out with a new badge and from the sounds of it a new grille