MADISON WHO'S WHO Fraudulent withdrawal of funds from credit card account Internet

During 2011 or 2012 I contacted Madison Who's Who after an Internet search. The reason was that I was due to retire from my employ and was looking for an opportunity to network with persons or organizations with whom I could possibly become involved on a part-time basis both here in South Africa and abroad.
After contacting them I received a telephone call from a gentleman in New York who painted a very nice picture of what the services were that Madison Who's Who offered and how they could ensure that my profile would be enhanced in such a way that I would receive invitations from interested parties.
I was assured that I would be listed on their International Who's Who register and that I would be receiving certificates of association with them. The person then proceeded to list the fees structure associated to each of their various levels of "VIP status" and set out the advantages of each level.
I then chose a level of about (I think) US$200 or thereabout. I also provided my credit card number and authorized the payment of the amount - which was duly done.
Soon afterwards the promised certificates were sent to me. Thereafter I received more telephone calls from them informing me that I was now one of their esteemed clients and that my name would appear in the Madison Who's Who register.
Soon afterwards I received another telephone call informing me that in order to secure my registration I was required to pay another amount. I found this strange and unacceptable and refused to do so. Various calls followed to convince me to make the payments. I then informed the caller that I was cancelling my association with them and that they were to remove my name from their register. I followed it up with an e-mail sent from my previous place of employment - I do not have copies. I was shocked to discover that Madison Who's Who made an unauthorized, illegal and fraudulent withdrawal of US$100 on my credit card account on 11 February 2013.