i kn ow how you feel,i was a victim of an attack like this last april,but set upon by 2 youths about 16 years old.
because i fought back with one of the youths the other one decided to join in.
i suffered a lost tooth,2 black eyes,and a dislodged tragus(the skin in between your nostrils)and there footprints embedded on my head for a week.
luckily a neighbour rang an ambulance and the police,had to have a head scan,tooth replaced.
i think if my neighbour had not of been there ,i would not be answering this question today.
thet never caught them.
i went to a solicitor and put a claim in of which is now pending what award of money they should think i should receive.
and also i am moving out of the area i live in,and i cant f****n wait.
i know how you feel.but if you do anything about it it will be you who gets in trouble for taking the law into your own hands.
GET THE CLAIM IN...GOOD LUCK