You might try one of the companies that advertises for spot fixes. I used to use ChipsAway in the UK and they did great work for around ~CHF100 per mark.
They've got a listing in Switzerland, but their website is a little out-of-date so I'm not sure whether they're still in business or not. (If you use them and happen to find out, please can you report back?)
http://www.chipsaway.ch/index.html?links.htm
That's the only service I've seen in Switzerland. If you're prepared to drive across the border to Germany, it looks like ATU offer a similar service:
http://www.atu.de/pages/werkstatt/smart-repair.html
To give you an idea of what they can do, here are photos of the repair to my car in the UK:
Before - managed to hit a bollard in the car park. D'oh!
The repair in progress -- they work out of a mobile workshop, so performed the repair at my apartment:
Finished product was as good as new:
Total cost of this repair (including touching in a few stone chips at the same time) was GBP 140. Superb value for money, imho.