Leaking Windows and Sliding Door Difficult to close

We own an investment property that for the past year 2 sets of tenants have advised the managing agent that water in penetrating through the bedroom windows in heavy storms and that the sliding door often cannot be locked once opened.

We believe the reason is that this being an older unit block with the thin 3mm glass, over time the glass is no longer sitting snug in its frame.

The strata agent has advised basically tough luck as the executive committee member (we only have 1)  has stated that they are not willing to pay for a repair.

Seeing that this is having an impact on my tenants (having already lost one) is there any recourse that I have?