Lens dropped

Visited universal studio yesterday, a wonderful place.
But, unlucky, my wife lost the lens cap; 1 hour later, the 17-55 lens got dropped, and UV glass is broken, the UV ring is dented. By quicky googling, I found guys spent hours to DIY remove the dented UV.
So, I gave up the chance to do it myself, instead, it's sent to canon service centre today. They helped me to remove the dented UV in 15mins, even gave me a free lens cap.
Huh, the service is great, thanks.