I had one incident in the past an asian lady side swiped my entire car then took off. I got her plate and called the police, they were of course less than helpful. I called my insurance and asked what they would do and she didnt admit fault at first.
I then decided to take matters in my own hands, first called her after finding her info and recorded the call stating she hit me and asked if she would be willing to admit fault she said on the phone she wouldnt and to not call her again. I didnt call her but made up my own business cards and letterhead with a "lawfirm" and sent it to her home and place of employment stating they were working on the case for litigation. Magically she called her insurance and admitted fault. I wouldnt suggest doing what I did as this was a while ago when finding stuff online was not as easy but hey it worked