Help Please!

Ok so my friend that I recruited, went to upgrade his account at my place, and when he finished the order he went onto WoW to check if it was a real account. When he logged in, it asked him if he wanted account 1 or 2, and we checked my account to see if the RaF was upgraded to and nothing was, So now he has a trial account and a seperate upgraded account with no characters. Can someone please tell me what happened and if we can get the trial account upgraded without buying the game again on the trial account?

Please help,

Thanks.