It was just one bill that was the most recent one that covers the period of the meter changeover. It seems I'm at the mercy of the reading performed by the plumber that changed over the meter and AGL takes that as gospel. As an update on this case, i managed to find a person with common sense in the resolutions team who has made an adjustment to this bill. Just waiting to see the next bill to confirm the adjusted reading on the new meter has taken effect. Moral of this story ...keep pushing to ...