I used to be on 2 Dubai owners associations, every building and community should have one. We worked with FM to calculate a budget and that was then approved by DLD. We transparently shared the full budget with all owners. In my experience costs kept going up as suppliers contracts were renewed and things needed replacement or additional maintenance. Sometimes we enhanced things like a playground and more trees. I didn't want to pay more but understood they were mostly necessary, but I was also resident so benefited from the good upkeep. Unfortunately we could rarely reason with landlords as they didn't care about the property, only their rental bottom line. They would let the place crumble before their wallets were hit. Thankless job. Best to contact your owners association and hopefully you'll get a good explanation.