Land dispute

I and my wife had gone to check our plot of land in my 72 year aged mothers name, there the next plot member had ilkegally encroached and started construction of house, then as we told them this is illegal they said it is their plot and they were not agreeing to listen to us. And after some time i and my wife went to the police station to inform them of the same as we had no idea what to do in this situation, then the psi was not available in the police station so 2 constables accompanied with us to the said site and he questioned the old lady of the house as to what had happened who all had come here, then the old lady of the house pointed to us and told these two husband and wife had come here some time back, then one of the senior constable who accompanied us told her that if the is illegally constructed it maybe demolished. And then we went back to the police station, meanwhile they informed some relative and they got in touch whith the PSI from their influence since they were local and we dint stay there we only had our plot in my mothers name at the site. The officers at the police station didnot write a report and told us the other party also wants to file a case since the PSI of the police station was not available they told us to come 2 days later. Then after 2 days the PSI told us that i should write the portion of the plot in their name otherwise they will file a case of some section 354 on me saying that i alone had come to the site and harased the young lady at the house and they made us sit there in tbe police station for 3 or 4 hours along with 5 members of the other party supporting them and threatening us me and my wife untill i and my wife signed a paper saying we agree to part with plot (which was in my mothers name and i was only one of the legal heir to the plot) . Then we contacted our relative who is a lawyer and he came from mumbai to karnataka and then he took us to complain to assistant SP at karkala, we narrated our situation to the ASP then he contacted the said PSI and asked him about the same but the PSI started denying to know what had happened and when the ASP at karkala insisted saying he had proof that this incident had happened, then the PSI told him there is another complaint from the Lady of the house on me, then when the ASP asked the PSI did you file the complaint frm the Lady the PSI said in the negative. Then they both had a discussion and the ASP told us to meet the PSI next day and sort out the issue. The next day we insisted on making our FIR and submitted our complaint as to what happened at the police station with us. A copy of which was also stamped at Karkala ASP. The PSI was not agreeing to file the FIR but we followed up with the ASP and they told us the FIR was done after 2 days. After 1 year we got summons on me of sec 354 and other sec. We didnot have any idea what FIR was on our behalf and what complaint thay had filed on me. It has been since 2015 to 2019 till nowCase 579/2015 & 580/2015.