What action to take???

Our building doesnt have registered society, but the owners have appointed me as secretary or incharge to look after collection of monthly maintenance/finance/general afffairs there was complaint against a occupant(rented) by another resident of building to which i went at their palace to make them understand i was very civilized in my behaviour and words to which many other people are witness the occupant along with one of their friend(who doesnt stay in the building and not realted to occupant)started misbehaving with me and other members of managing committee of building After that they filed a NC with local police with wrong charges on us, we were called and we made the police understand the constable on duty told us to amicable setlle it Today we called the owner of the house, he told this occupant to vacate his house by end of month(december) The whole building is frustated with this occupant they again went to police station today again we were called the Senior Inspector behaved rudely with us and was biased and partial and without listening to us or giving us a chance to explain our viewpoint serve us notice under CrPc 149 and we were told that this doesnt mean any action and its mere formality But i m very disturbed as the other party is completely lying and i was very civilised in my behaviour i m feeling down and disgusted i m planning take action against this false complaint which was made and i want a written apology from this complainant Can u plz guide