Replying to Flame Tree (there is no Reply/Quote button underneath the post): Unfortunately nuisance bees in NSW are handled under the Biosecurity Act, not the Crimes Act. And under the Biosecurity Act and it’s procedures, it is necessary for someone with a bee-related health issue to provide evidence. Probably no one has tested that in relation to the Privacy Act, but presumably the OP doesn’t want to be the one to test it (plus the OP has not mentioned a bee-related health issue).
For obvious reasons, it’s not advisable for the OP to spray the offending bees, but some quiet words to the majority of other owners in the development might lead to a by-law that will solve the problem or give OP the basis for an NCAT complaint.
In the meantime, there are various non-toxic deterrants and the OP can look these up and try a few things to see what works.