They are your minutes so insist!
I am surprised that fences would be paid for by insurance. Usually insurance would pay if a particular event caused damage – somebody backed a car into the fence, for example, or it was washed away when a water main burst. Routine repair, maintenance and eventual replacement is generally not funded by an insurer.
If WA is like the ACT, the Act requires the owners corp to be fully insured. However, you can’t get utterly ‘full’ insurance because every insurer has an excess on their policies. To the extent that the OC is not fully insured, it has to pay the difference. There are moves here by some to try to have that changed so the excess for repairs to individual units can be charged to those unit owners.