Aggressive teenage girls

A few days ago I was attacked by a group of 15 year olds who were 100% looking for a fight from the second they looked at me.

They were trying to take my jacket so obviously I defended myself, I really doubt they were trying to rob me, seemed more like provoking.

After telling them "no" repeatly I said "can't you find something better to do?" and that's when they started attacking me, I left and called the police.