NEVER EVER reply directly to a notification sent via email. It is almost assuredly a fraud or method of getting someone to log on to a faked out site for nefarious purposes. I've gotten a few of these and before you can say "Tom Dick or Harry" they get tossed into my SPAM or TRASH box.

If you get an email that actually looks genuine and you are almost convinced then go to the official website and confirm the message or contact the vendor before doing anything else.