World of Warcraft email!!!!

[Reece]

Hi, I just received an email from wowaccountadmin@blizzard.com, however the return address is: olivierodeurs@hotmail.com
This is what it contains:

When you receive this letter we are reviewing your account.
We have reason to believe that you have participated the illegal business.
To obtain further information, please help us.
Please visit www.worldofwarcarft.com
complete a questionnaire.
If you refuse to cooperate we will be in 48Hours after your account status changes to disable.

The thing is I don't have or even play the game, I certainly don't have an account there!
Any ideas on what I should do? Just found that the above link actually goes to http://www.worldofwarcraft.sv2-wow.com/
I would take caution on clicking those links.
Thanks.
Edit: There are 2 genuine WoW email addresses below that I could use to reply.
billing@blizzard.com
wowcommwatch@blizzard.com