Need help getting access to an account

[E-S]

Hey

I have the realm, name, address and (possibly) the phone number for an account, but I don't know the login, password or secret question / answer.

Long story short, I sold a loot code on ebay, the guy "paid" for it and then put a claim into PayPal to say his account was compromised. This leaves me the money & loot code short...

What would I need to do to get access to the account?

[ubrpwnt]

Call his number claiming to be Blizzard using *67 and if he asks about the number say that it's an anonymous number blizzard uses and they hide it due to recent spam.