Bail Conditions And Copy

Myself & 4 peoples were misled by a builder employee for property purchase and got cheated by them. They have created a dubious account in the builder name and they have taken our booking money. The builder says he is not aware of this. Cheaters were arrested by police, they were sent to jail with only one FIR with threatening of additional FIR. Before going to jail, fraudsters agreed to settle the money in front of the police. Now they came out of bail, and not coming to the police station for negotiation. How do we proceed further to get these guys to the station. If we file one more FIR, will it help or the bail which they got earlier will be applicable to new FIR considering the offense is the same. How to get their bail copy.