Recruit-a-Friend Account Merged Automatically

Hi, I need assistance regarding a automatic account merger when I recruited a friend. I logged onto my account management page and sent my friend/husband a referral using recruit-a-friend to his email. He went into his email using my computer and clicked the link that was given to him which, without warning, added the 10-day trial account onto my primary WoW account because I did not log out of it. There was no warning or confirmation :( To make matters worse, we did not realize it was added onto my Primary WoW account until after we upgraded the account using a original WoW cd-key that he brought. Now we are stuck with my main WoW account and a account that has been upgraded with cd-key under the same battle.net account :(. Please help, I wish to seperate my primary WoW account and the new account "WoW1" into seperate battle.net accounts so we can both play. I also need help deleting another trial account called "WoW2" which i accidently added while trying to figure this all out....

Very appreciated for any assistance you can provide - Thanks!