Filing Private Complaint for Trespass

Hello, My house property has been trespassed and damaged when it was locked up during covid, by the neighbor who is uncivilized and has been doing reckless construction of his house over last several months The reckless construction activity had resulted structural damage and paint damage due to splashed plaster. The neighbor has ignored past requests to take precautions and also ignored my legal notice Now, since he has completed his construction, he has trespassed and painted the building walls with a color shade and quality without my knowledge (again recklessly). This has only resulted in defaced walls, and south facing 3 floors having a different color I lodged a complaint with police for house trespass and mischief. And also mentioned that the damage is considerable. Now, police are refusing to file the FIR and are saying its civil issue I have till now logged an online complaint in TN police website, sent the copy of written complaint to SI, visited multiple times and met SI and Inspector and finally also sent request to SP. Also sent an RTI request to get reason for delay in filing FIR. But, no response. Even after i shared the SMS messages, video recordings, and photos. And after summoning and inquiring with neighbor, the police keep insisting that its civil matter. How can this be a civil matter, when someone enters the locked up house and paints 3 floors, compound walls without consent/knowledge of owner? Please advise what should i do? Thanks for all the great work and assistance being provided here. Appreciate it