just requesting an email change won't help, you should send a ticket
here with this info:
1) Account Name
2) Server(s) your character(s) are associated with
3) Name(s) of the character(s)
4) Items which the character(s) have equipped and in the inventory
5) Last 5 items purchased in Item Mall (including dates, times, and
character(s))
6) The transaction #'s for the last 5 items purchased
7) The last time and zone your character(s) were logged in
8 ) The original and current email address associated with the account
9) The date the account was registered
10) Your I.P Address ( feel free to use whatismyip.com)