Be careful if you order a replacement book for a s...

Be careful if you order a replacement book for a set. I was quoted 21.40 over the phone and my card got charged. 3 days I get an alert from my credit card company of fraudulent activity and the original charge had been reversed and a new charge of 34.29 was put on my card. I got no call or email notifying me of this new charge and found myself feeling cheated. I feel as though they made a mistake and just weren't honest about it. Its just not good practice and in the end it was an unauthorized charge that I was unaware of.