i was recently in an accident on the freeway. i called the cops and i got out to check on the other car after we got escorted off the freeeway. the cops told me to go back to my car and got my info then they all left. i never received the other driver's information or anything. i just got a letter from their insurance agent talking about a claim. somehow they have my info but i know nothing about them. did i do something wrong? and is this technically a hit and run or anything?