Contact information for fencing

We are at the stage on our build in Kilcoy, Queensland where we need to get our fencing installed but we cant get any contact details for our neighbours to give them fencing quotes for their share of the fence. We arent sure where we can go to get them, but we tried asking the council, developer and builder, all of who wont pass on their details to us for privacy reasons. We gave our details to the developer and builder to pass onto them but we still havent heard anything after almost a month. Any ideas as where we go from here as we dont want a battle with new neighbours to get the fencing sorted.