Your Management Co should know and also you could call to your Co. Co. It might be no harm to check with both and see if they are not blaming one another. You could get a good local councillor to get the story on it. Has everything been finished in your development. It can be many years afterwards before the council take it over. If everything is finished you might have to get together and put pressure on local councillors of all parties to get something done. We are paying LPT now.