There is certain information that a bail agent will need in order to help you:
There are four ways in which a person may be released from custody.
There are a few exceptions to this but you do not get your premium back that you paid to the bonding office. This fee is what allowed the defendant to get out of jail and is fully earned once the defendant is out of custody. For example if the defendant gets rearrested a week later you get no portion nor a refund of any money. If the bondsman fails to live up to his end of the contract then and only then you may be entitled to a refund of some kind.
You will have to get permission from the bonding office in writing before attempting to do so. If the court has given you direct instructions not to leave the state or country you must then get permission from the bail agent and the court before leaving. Otherwise you are subject to arrest.
Once the defendant is back in custody the bond can be surrendered and your liability will be terminated. There are a few problems here: if you decided to surrender the bond you will lose the premium that was paid, and if you decided to get the defendant out on bond again, you will now have to post two new bonds and pay the premium on both bonds again.
Each bonding office will have their own standards but for the most part you can expect them to accept various forms of bail collateral. Some example of collateral include: