Car Smashed up - AHHHHHHHHHHHHHH

Some bloke today hit me up the rear( the Car) this lady 2 cars infront of me decided to park her car while doing 30 miles an hour. the lady infront stoped and so did i . the people got out in the 2 cars infront and the got back in and drove off........ Pain. needs new bumper , back door, and towbar. £150 excess ahhhhhhhhhhhhhhhh