First thing I would do, especially to avoid 'bill shock' is to use the AGL website to enter your gas meter read and do it daily and keep a log. I do this for Electricity but only do weekly for gas as gas is only for cooking and hot water and is cheap, by comparison to you. When you do a read and enter it, it tells you your bill to date. At least this may you monitoring daily usage of gas. Jumping ship is a solution but you may go from the frying pan into the fire.
Be prepared to private message one of the modertors here you past bill with AGL, it maybe your on a wrong tariff or your on bill smoothing.
Hi @kbour I'm really sorry to hear about the high billing issue. To be able to assist you with your enquiry are you able to provide with your account details via a private message, please ?
HI @kbour Once again we're sorry that were unable to assist with your enquiries. Should you wish to change your supplier in the future we'd be more than happy to discuss our plans which best suit your energy needs. All the best.