How and where to raise a complaint against the neighour

Respected Sir/Mam, This complaint against my Neighbour Mr.Savarimuthu aged around 45 to 50 years who resides next to my house in chennai(Vyasarpadi). My grandfather aged 70 years had already lodged a complaint against the above person at the nearby police station to the Sub Inspector of Police through words by person around 3 to 4 weeks before regarding not allowing us to smear our building which was raised on their compound wall, where we started constructing on march 2017 and finished at the mid of june 2017, with the scheme of government of tamilnadu to the people who owned the tiled house . we did not get the right justice. Hence would like to bring into notice and request you all to suggest the right way to proceed with further steps. The reason for which they are not giving necessary time for us to do our work is that their plants and trees will get damaged, eventhough we pleased them many times from our side and with the help of some people in our area, that will compensate if any damaged happens or else mostly will avoid such damages, if happens we are ready to pay for the losses,though they are not ready to listen. On 2007 we bought our tiled house, from that time till last year they used to insult us using our poverty and most often they used filthy words on me and my parents. so please suggest us to take further steps