Hearst Corporation - Invoicing Bureau Good Housekeeping Billing me for magazine I never ordered or received Internet

I have been receiving bills for a subscription to Good Housekeeping that I not only never ordered, but have never received a copy of.  At first I ignored the first invoice thinking it was just another scam expecting me to whip out a check and pay them because I received a bill in the mail.  Now I've gotten a second bill and they're starting to get a little pushy with their collections, stating that when I ordered my subscription I requested that they bill me. 

It's pretty annoying to get such a notice and there is no contact information on the invoice other than a post office box where I'm supposed to send my payment.  I tried going to the website and could not find any "contact us" link or phone numbers. 

I just wanted to alert others that if you receive a bill from them, it's not necessarily yours or valid.  Beware!