Guild Wars 2

i’m posting this for my friend who got his account suspended and we do not know what happened. we already put up a ticket, please fix this.
the account name is:
yotsuba pat.4619

reference number: #121124-000543

Posting for a friend.
after much discussions i was finally able to convince my friend to buy a guild wars 2 account. we went and bought from a reputable store in our country and i was able to register my account and serial, he was also able to enter his serial key but on the end of the registration process there wasnt any congratulations or confirmation email sent. so we retried to register again but now after entering the serial key it says that it has already been used. please help us both. thank you.

This is his support ticket.
120910-003774