Jims S-Special

That's a real b*tch someone doing that in your work carpark. No CCTV? Judging by the height of it I'd guess it was an SUV type vehicle. A quick look round the carpark for one with extra black paint?

As the guys say above, a front wing is much better than a rear to ding as they are a simple bolt on job. In fact, I dinged the MK1 front wing last year in a similar place & fixed it myself: Unbolt the 4 or 5 bolts along the top(leaving the door hinge ones alone) of the wing & using about a 4ft piece of timber try pushing/levering the ding out carefully. If you're going to replace it anyway it's worth a try first maybe?

Good luck.