I bought a book from discountbooksales.com and got a 5 dollars discount. I was pleased with it and the book came quickly. Now, one month later, I get my credit card statement and I see they charged me for the book and, two days later, another $19.95. I called them and they said it's a membership! I never knew about a membership and it's not written anywhere. I never got a receipt for it or any information about what my membership is about. They said they can cancel my membership but can't refund my payment as I had 3 day... read full review »