Santa Clause.
Easter Bunny.
Good Customer Service from nexon.
A funny Family Circus cartoon.
Bisexual, Vampire Teen Wizards.

What do these things have in common?

None of them are real. They're all imaginary.

I will explain Nexon's approach to customer service in one sentence and then some more sentences after:
"We have your money, fuck you, we have your money."

Example:

You forgot your password.
You click the link "recover PW" under log in.
You are NOT sent your password. You have your real password reset. You are then sent a temporary password to log in with.

Your only option to check your account info is a reset password option. There is no info on your account for you to review. NOTHING.

When you attempt to change your password to a new one, you'll find that your temporary PW doesn't count toward changing it.

Thus, they've completely blocked you from ever logging back in on that account, as even if you remember your old PW somehow, it's now been reset to a random string of letters and numbers.

So basically, you need to remember your PW to recover your forgotten PW.

To use their customer service to open a ticket, you'll need to log in.

The ticket must consist of your two security questions, the second of which, ISN'T TOLD TO YOU.

Not only that but Nexon has been known to change your security questions without notice!
So ...

Non-existent