You accidentally made a WOW2 when you meant to upgrade your trial account what do you do

If you tried to upgrade your trial account but accidentally created a new WoW game in your battle.net account, the best thing to do is contact customer service. Explain them that you would like the characters from your trial account moved to your new account instead.

If you had wanted to use the RAF feature instead, instead tell them that you would like to make use of the RAF feature and that you would like to know if it is possible for your trial account to be upgraded with the information in your second account, to keep the possibilities of the RAF feature.

In either case, it is likely you will be asked for identification and the authentication key of your new WoW account, so keep them close when contacting them.