Even though, as others have set out, there is a formal procedure for calling a special Meeting, I think you do have a point about its potentially being to your disadvantage that you do not know who the other owners are.
If you knew who they were, you could speak to them or mail them to campaign for your point of view, well in advance of the next meeting. And if they heard from you what you are trying to get changed, then they might a) be more inclined to attend the next meeting themselves, or b) be less inclined to grant a proxy to the very person who might be contentious.
It is, of course, also possible that they may disagree with you, and work to oppose what you are trying to achieve. And of course, someone will surely inform the person you wish to oppose that you (and perhaps other owners who agree with you) have become active. But at least you'd be having the conversations yourself, and learning how the other owners see things, and explaining what you think should be done to remedy the situation.
Therefore, in your position I would set about trying to find out who the other owners are. Here are suggestions to try:
- The printed flyer is one option. Distribute it in person into each letter-box, and a second copy to each door, in person if someone will open for you, and otherwise try to post it under or tape it to the door.
- Read through a number of previous Minutes of meetings, and pick up the names (and the troublesome issues, if they were already recorded) from there. If you do not have those minutes, (perhaps because you are a new owner) then ask your management agent (or an owner you already know) to supply you with copies.
- Knock on each door and ask the residents whether they are tenants or owners. If tenants, ask how you could contact their landlords, or if they won't give you the info, then ask them to ask their landlord to contact you. (You'll have more success with this if you take care to explain that your wanting to speak to the owner is not to complain about that tenant.)
- Have a look at the cars, and see if anyone has a business info painted on the vehicle, that you can google/trace to be connected to the owner.
- If there are long-term cleaning and maintenance staff in the complex, ask them. They might well know who owns what, or know which owners are friends with which other owners, and sometimes even have contact details, especially if they at some point have worked directly for those owners, in addition to their jobs for the Body Corporate.
- Have a look in the municipal Valuation Roll.
- Enquire at the Deeds' Office.
- Subscribe to a property search service.
- Buy a property report on each unit.
- Find out if there is a Neighbourhood Watch organisation, or a Community Improvement group, perhaps beyond the owners in your complex. Someone somewhere will have a WhatsApp group or a Facebook group, and may know an owner or two from your complex.