Nitro Downloads Nitro Downloads ripped me off!! internet, Internet

Nitro Downloads is a ripoff!!  After searching the internet for a topic for my paper I found what looked promising on Nitro but I had to pay $4.95 for a 7 day trial membership. I unfortunately fell for it and paid $4.95 and then of course, the document I had found was not on the site I was sent to. The page that had the document on is on a continuous loop requesting that I had to sign up to access it.  There is no place to login only a sign up. There is no contact information. The third party site that I was sent to is no help. I sent in a complaint to their "customer service" but of course there has been no response. 

I have now wasted an enormous amount of time on this and will have to take action to prevent any further charges from being charged to my credit card:(