One step forward, two steps back

So, I went to drop off a sling to a woman here in town, on my way to pick up Fi from school the other day. I went inside for 10 minutes, tops, and when I came back out, someone had hit my car and knocked my driver's side mirror off. They must have been driving fairly fast because the actual mirror was about 15 feet away in the yard. It is so disappointing to me that someone would hit my car and not even leave a note. What kind of place do we live in? This is a nice neighborhood in midtown. I guess I was just at the wrong place at the wrong time. Unfortunately, I am afraid that my mirror will cost significantly more than the sling that I was dropping off. What a fricking bummer.