Fraud by people acting as college admission officers duping students

We had gone to mumbai for admissions where 3 guys acting as admissions officer from terna medical college told us that we need to pay 20 lakhs as management fees.They asked us to pay this for confirmed admission.offered us a cheque in return as security and also took the amount through cheque.After the admission process was ovee and we were not given any admission we asked dor the money back and they switchd off their phones and became untraceable,We lodged a fir in udaipur where the case went on for 1.5 yeras.those guys got to know this and sent a lawyer who bribed the police to close the case and not present it in front of the court. They also tried to pressurise us through the police and told us to resolve this outside court and offered us cheques which later bounced. They have been hiding their true identity but we searched on our own and found their real names. How do we tell the court that this is how the police is working and pressurizing us by supporting the criminals?