Who pays when insurers leave a gap

We suffered extensive damage from a water leak caused by a burst pipe in someone's laundry uspstairs.  This was Christmas Eve last year. 

We basically had no help from strata and had to organise and pay for most of the repairs ourselves. They took four months to re-wire the apartment properly, for example. The apartment was uninhabitable for months.

Between the building's insurer and our own landlord's insurance we were re-imbursed (after ten months) most of the money we paid (about $20000), but are still owed about $1100 (largely excess from our insurer, and the cost of repainting when mould continued to develop), and are still awaiting approval to have damaged floorboards sanded and polished.

We have asked strata to pay the balance; the strata manager asks the building insurer to pay, they do nothing, and we go around in circles. We have had a huge battle over the last 11 months to achieve what we have.

We think strata should re-imburse us for the relatively small amount of money owed. We are furious with the strata manager, but he was voted back in at the AGM, by the executive of the OC. And we still don't have permission to fix the floors. What should we do next?

Thanks.