US Circulation Corp Marquis Fullfillment Agency Magazine subscription Scam Buford, Georgia

On 12/8/10 one of their sales reps knocked on my door offering to sell me magazine subscriptions in order to help her win a scholarship and a trip.  The girl had legitimate looking paperwork and documentation, which led me to beleive that they were a legititmate company.  I went ahead and agreed to purchase a year magazine subscription for $51.  The girl, Brittney Midgette, asked that she would prefer cash because she would get her points quicker.  I went ahead and decided to help her out and paid her $51 cash.  She gave me a receipt for the transaction and was on her way.  It has been over three months and I have not received my magazine in the mail.  I have called the customer service # 770.831.7722 that they provide and it always goes to voicemail and most of the time it is full.  I have sent numerous emails to them and I have yet to receive a response.  I found a phone number for recruiting and called several times until finally Keith answered, which is apparently a manager.  I told him about my problem and he said that he would have someone call me back.  It has been several days since then and I have not heard from anyone.