1) you can file for divorce on grounds of mental cruelty under section 13 of Hindu marriage act
2) in said proceedings you can also seek custody of your child as well as maintenance from your husband for your self and kid .
3) if police is not taking action on your complaint you can move HC by filing habeas corpus petition to direct production of child which has been kidnapped by father
4) you can also file domestic violence case against your husband and seek alternate accommodation and other reliefs