Funny you should mention having your aerial fixed Gemibabe ... that's how I had my bumpers painted!
My aerial was broken off by some person or persons unknown

so I asked the service department to replace it when I had my car in for service. They did, but scratched the paintwork while putting on the new aerial. Naturally, they booked in my car to have the scratch sprayed at their expense.
When I took the car in for the scratch to be painted I pointed out the marks on the bumpers ... they had them sprayed too ... including the numberplate holder on the front!
I hope you get satisfaction with your situation Gemibabe.
Brian.