Banned accounts for no reason?

I have a friend who JUST came back to World of Warcraft after many attempts of getting him back and you guys ban him with the following:

> ***Notice of Account Closure***
>
> Account Name:
>
> Reason for Closure: Terms of Use Violation -- Exploitative
> Activity: Abuse of the Economy
>
> This account was closed because one or more characters were
> identified exchanging, or contributing to the exchange of,
> in-game property (items or gold) for "real-world" currency.
> This exchange process negatively impacts the World of
> Warcraft game environment by detracting from the value of
> the in-game economy.
>
> Even if this behavior is the result of a third party
> accessing the account instead of the registered user (for
> example, a friend, family member, or leveling service) then
> the account can still be held responsible for the penalty
> because of the impact it had on the game environment.
>
> We've found the above behavior is many times directly
> related to groups responsible for compromising World of
> Warcraft accounts; we take these issues very seriously. To
> better understand our position against exploitative activity
> and the risks involved, please review this article: http://www.worldofwarcraft.com/info/basics/antigold.html
>
> The exploitative activity that took place on this account
> violates the World of Warcraft Terms of Use. We ask you take
> a moment to review these terms at http://www.worldofwarcraft.com/legal/termsofuse.html.
> Any recurring subscriptions on this account have been
> suspended to prevent further monetary charges.
>
> For any disputes of this action, please visit the
> Exploitative Activity FAQ and Contact page here: http://us.blizzard.com/support/article/exploitfaq
>
> Regards,
>
> Blizzard Entertainment
> www.worldofwarcraft.com

First off, he only had 50 gold on his entire account. Second, he JUST came back on merely days ago.

Is this happening to anyone else today?!?!?!?!?!?

I highly think this is a mistake by blizzard. He attempted to call the number about the closure and they sent him to a recording that gave useless information and hung up on him. This is not what I call customer service.

Please return his account. Thank you.