I have a little accident on road, the other person gone away and did not cal najm. I thought that if he hone i cannot cal najm so i came back..its a scratch on the bumper from side..i have new car just bought a week ago..now what i should do..i didn't cal najm so i dont have claim paper.. so it can be repair as its not a big damage? and how must it will cost..if no what should i do now..plz help