How do collect reimbursement of a Surety Bond, once my case is resolved, and sentence is completed?

I served a (180) day sentence for DWI in the state of New Jersey. When I was first sentenced (March, 2015), I was taken directly from court to jail to begin serving the (180). I decided (in conjunction with the advice from my attorney), that I should opt to appeal the sentence, and I was allowed to bail out (50,000/no 10% option) in May of 2015, until my appeal was heard. I paid the bail bondsman (2) payments on the day I bailed out. (1) in the amount of $5,000 (which I understood I would not get back), and another, also for $5,000, which was placed with a Surety Company. Once my appeal was heard, and I made all of my court dates, I was supposed to be refunded that second payment of $5,000. My appeal was denied, and I went back to jail in Aug, 2015, to serve the remainder of my sentence. I have been unsuccessful in getting refunded the $5,000 up to this point. The Bail Bondsman has been unresponsive, missed multiple appointments to resolve the matter, etc. Seeking assistance