Old windows…who repairs them?

Hi,

I have been living in my apartment now for 2.5yrs and all the windows and balcony doors are super thin. So thin in fact that even when the wind blows all the windows shake. Not to mention the noise coming through. Also all the air leaks through. So I’m either super horse or super cold. 

I have spoken to strata and they have just brushed off the issue by saying that I have to create a by-law to change the windows and doors. I did look into getting double glazing but at $8k for 3 windows I said no thanks. 

Is not strata supposed to replace windows that are not safe or not functioning? Also I’ve only just realised that we have to have locks on all windows by reading this forum. They have not notified any of us about this. 

Should could someone pls help me know where I stand with getting these window/door issues solved. My strata have been no help what so ever.

Thanks in advance