@robcar207 . . . this happens . . . regularly !
Many, MANY threads on the forum here in the same vein, my recent thread from 2 weeks ago is here . . .
https://neighbourhood.agl.com.au/t5/Energy-Accounts-Plans/Another-email-quarterly-to-monthly-billing...
That has the methods to change back to quarterly (you did this already, but it might be handy for others).
You were just changed and had already received a first monthly bill, but you should have received an email (or letter) prior to advise the change . . . I got an email (text in my link above), and immediately took the steps to change back.
It looks like despite peoples past concerns on posts about this automatic change to peoples accounts (at least a year and a half or so), and not making it an opt in option, this is not being taken seriously by AGL policy makers, and this will continue to occur, perhaps annually like my experience.
It should be opt in of course for people that have no issues paying quarterly.
I can see how monthly billing would be great for AGL's cashflow, or how a change to monthly might suit some customers with big bill stress, if those larger quarterly bills cause a % of customers to continually pay quarterly bills late etc.
Late payments are a problem for any company to follow up on, even with late fee.
AGL then could suggest this to those customers that more frequent bills may help them control this better *.
But it should be a choice for consumers having no such issues with bills.
( * Obviously it's generally high power cost that is causing stress for many.)
