Studymode Deceptive practices, no refunds Internet

I am a middle school teacher and I was searching the web for a worksheet that was related to what I was teaching. My search came up with content from www.studymode.com. In order to access it, it staed I would have to pay. In big print it said "2 days for 2 dollars", I found this reasonable for what I was doing and I paid it, downloaded the file and called it a day. Several days later I see that they have not only charged me the 2.00 (which is correct), but they have signed me up for a monthly fee of 29.95 and have charged that as well. I contacted them immediately (only on the 3rd day now), and they would not canel and refund, even though it had only been a day past the 2 days I paid for. I thought I had played fair (2 bucks for 2 days), but they have decided otherwise. I am not happy.