I agree with what the others here say, i.e. Pink Lucy and DSC.
The landline thing is an issue. Our building has an older demographic so there are still a lot of landlines. Still, it wouldn't hurt to try. There's no way the city would give you the info and management, quite apart from self-interest, can't do it for privacy reasons.
But I would first solicit help from like-minded neighbours and write up a compelling single sheet that you slip under the doors. The info should emphasize the consequences of not getting owners on board. This sounds like a new build and who knows what can go wrong structurally. By the time you figure it out, the developer could have skipped town.
Possible problems involving neighbours include:
-- A lot of renters who don't care
-- A lot of younger owners who work long hours and can't be bothered
It's often us older, often retired, folks who have the time and energy to galvanize others. Look for them. If they have cars, stick something under the windshield wipers.
And read this: When something goes wrong you all may be screwed so this could get people motivated to get involved. It sounds relevant:
<Can the initial board of directors appointed by a condo developer turn around and insulate the very same condo developer from liability if, say, the common elements are constructed deficiently? In a recent decision that is bound to upset current and future unit owners, the Ontario Court of Appeal essentially said the answer is yes.>