It may well be a fake. One such phish claims that some purchases have been made and asks you to sign into your account to confirm or report the problem. If that's what the email you received says, it's almost certainly a fraud. To see what's really been purchased through your iTunes Store account, check your purchase history:
http://support.apple.com/kb/HT2727
If these purported purchases don't show up there, then the email is a scam.
For future issues, please be aware that you are not communicating with Apple when you post in these forums. These are user-to-user support forums, so in almost all cases the only people who will reply to your posts are, like me, your fellow users.
Regards.