@Keithakam are you getting estimated bills ??If not, you probably have a digital meter, mostly requiring no reading . . . unless there is no internet connection, then they are read like a normal old analogue meter).Or, you have an analogue meter, and the AGL meter read contractor has been doing your reads ok. Sometimes readings are missed, no access, dog present etc, and they estimate a bill based on past bills (usually estimates can be very high though !!), and next bill if a reading is done it ...