I don’t think asking for clarity on invoices is unreasonable.
You do need to look however at what you are paying per annum for strata management. If it is not in the higher price bracket then you shouldn’t be expecting your agent to add extra work to their already extremely busy day. A strata manager with a large portfolio may get up to 100 invoices a day to approve so they will not be wanting to add extra time to this process.
Pay more for your strata manager and they will be able to manage less buildings and give better customer service.
Pay budget rates and they will give budget service.
If you pay premium rates and get low service – look for a new strata manager.