Well Here is the Number to Nexon HQ
Nexon's Number:1-213-858-5930
With this number you can call them up && try & see if you can get your account unbanned just follow the operators instruction & you might just get your account back
PS: I Heard this works about 7/10 of the time but keep trying on multiple banned accounts to see what happens && Also i havent tried yet b/c i aint get the chance to but i will && this is the real number it aint a fake !
Thank me if i helped xD