You can't "hack" a Guild Wars account. The only way to lose your account is giving you password to the thief, either by telling him or installing a keylogger. Both ways, it's always the victims fault. GG, I hope the guy who took your account has months of fun with it.
I wonder if he realizes all the comments on how it was just pure stupidity...? Anet WILL NOT give u another account or do anything for you but send you a letter saying sry blah blah blah your wasting your time you got your account stolen not hacked its your fault nobody elses why would you give a person you dont know in real life your password...It makes no sense. My advice is buy a new account and dont give anyone anything and stay away from people asking for it its your fault