1. assaulting a person is criminal offence for which you can lodge complaint with police on which basis ca se u/s 326,506 would be started agaisnt him.
2. It appears FIR is not registered and that is why police is not helping you.
3. if FIR is not registered then file petition u/s 156(3) crpc to initiate such case from court.
4.You can not force your father to support you if you are adult. It is his choice whom he will support in every way.
5. be a man and make your own destiny. Good luck.