Good morning, Stinga60!
Thank you for reaching out regarding AGL's payment details.
Your BPAY biller code depends on your account particulars, and your BPAY reference number is specific to your account. For this reason, we'll have to kindly ask you to refer to the bottom page of your most recent bill, you will find all of the information you require! This article might also be helpful in identifying biller code details
Hopefully that helps!