@David ***
it means because you don't have a bank account with 800,000 in for the extensions each year you are unable to satisfy the visa requirements and have to use the agent again.
It's worse than that though, as it is illegal, so if the Immigration Officer is investigated, they will cancel ALL of the visa that were approved without the required conditions satisfied. You would then be forced to leave the country. I have seen several posts from people complaining this has happened to them over the past few years, so it does happen. My advice would be to use an agent to help open a bank account for you and then deposit your own 800,000 and do everything else yourself as it is easy. Good luck.