I had the same problem but didn't notice it until I had been charged 3 times. You can call the number mentioned above and if you argue long enough, they'll refund 1 month. I called my credit card company and put a dispute in concerning the remaining payments. I think this all started with my ordering a disk concerning ebay auctions. Apparently if I didn't cancel something within 10 days they were to bill me. Although I could not convince DRI of this, this practice is illegal (don't know the statues, but it is). On top of all of this, DRI passed my Credit card info along to another concern, Residual Savings, who was also billing me 12.95 per month for some other nebulous service.
I've given all of this information to my credit card company, but it galls me that I was so easily taken. I even remember getting a phone call (I assume from DRI) with an obnoxius salesmen trying to sell me something additional.
In all of this, of course, I received no services, nor did I know I had any. Just trying to do my bit to shed light on a shabby company(s).