Jetta and golf wings are the same. Either they have done a sh!te job (which is very possible) or that they haven't bolted it up in the right position, close to the grill. Pop the bonnet and check the 4 or 5 bolts on the top of the wing, slacken them, push the wing as tight as tight as possible, then retighten. If this doesn't solve it, it was a poor repair.
If you can push it in and then the bonnet doens't shut then its not correctly aligned.