Welcome to the AGL Community!
Having multiple accounts can unfortunately cause headaches, but it's nothing that we can't work around. If you can shoot me a quick private message (by clicking on my username "jaydeny") with your AGL account number(s) and address, I'll be happy to lend a hand.
Thanks for getting back to me!
I've taken a look at your account and I've fixed up this issue for you. As a result, you'll get an email very soon prompting you to re-register for our online services. Could you please follow the prompts within this email and log back in?
Let me know how you go.