Hi Schander,
Thanks for your reply. The meter is an EDMI Mk7c Atlas. I 'think' this meter was installed when the house was built in 2008. We purchased in 2010.
We installed a 1.5Kw system in 2012 and have been getting credits for solar that we generated from it. Our previous supplier, dodo, were giving us quarterly bills and I assumed they were getting data remotely, but not so apparently. The problem only became apparent when we joined AGL and opted for monthly bills.
I've since contacted AGL and they have arranged to have the meter updated next month at no cost to us.
Update at 19:46: I've logged it all with EWON. Affording the over the top estimated usage is not the issue. I just want their system fixed so future newbies don't get caught, or can get an amended bill.
Keith