Welcome to the AGL Community!
This sounds frustrating. Does your account balance appear to be overdue when you log into your AGL My Account? You can log in here.
the over due bill has now been credited but I would like the penalty fee credited as well as it's unfair and unjust to be a penalty fee for something we didn't do. Can you credit this amount please?
Unfortunately I can't arrange this through the Community I'm sorry to say. If you log into your My Account using the link above, you can get in touch with our customer service team via Messanger.