magazineservicesofamerica.com, Francisco7378 Was told to renew subscription account ,which I never had. Said they will charge my credit acct. every month margate, Florida

magazine services called to tell me it's time to renew my subscription (which i don't have and never requested any) and they are going to charge my credit account monthly! told Francisco, the caller, who was reluctant to give me his name, i never heard of you and never did business with you so cancel whatever you are talking about.  however, he said they'll just charge me monthly.

how can they do this and wonder where they acquired my credit card number.  i never give out my card number.  am very careful about fone calls from unknown people.