Business partner taking all the documents

My parents with One of their known friend started an Auto finance business entity and was running it for some 3-4 years. There was a person who was the managing partner, handling all the day to day activities. Last year some issue happened between us and him over some misuse of funds. During which, he took all the finance documents and kept in his other business office. Then the corona lockdown happened and we couldn’t reach him. After relaxation, he continued the business and collected money but was not giving us our share. We asked for it but he denied and said we will never get anything from him. We approached the local & District police stations and filed ’N' number of written, online, registered post, cmc cell complaints from Jan to May 2021 but they didn’t get any response from them as we realised in time he had someone there and bribed at right places. During March, there was some fight between him and one of our relatives which he used, filed a complaint and made police to file a criminal FIR against that relative adding my name as I was raising complaints on behalf of my parents. We had to take AB for that FIR. We have the original registration and agreement documents with us and also a lawyer notice which he sent after we gave the police complaint in which he is claiming that we took our share and left the business by 2018. Here we get points from local advisors that we won’t get any solutions neither through police or court. Is there something we can do about it.