OH DAMN!!
hope there were no injuries and i'm glad to know your parents are ok. You should do an FIR immediatly regardless of how incompetent the police are (i hope the truck numbers were noted, you can charge them with 279 and endagerment of life, or assault with a deadly weapon, or even Actualy bodily harm, but if skin was broken and there was blood then it becomes grevious bodily harm and carries a longer and more stern punishment)