Hi OKL,
Great question!
It sounds like you may have "MDL" meters at your property. These are meters that can be remotely read, but if a fault occurs with the meter then it will return an estimated reading. You can find further information here underneath "Gas Meters How To Read".
In order to have this issue addressed, a member of our customer service team will need to arrange for Jemena to attend your property to take a look at your meter. You can get in touch with our team here!
Kind regards,
Jayden