JPMorgan Chase Credit Card Complaint

JPMorgan Chase Credit card department,

Transaction issue Maine

Amazon purchase - was a purchase of -, minus promotion -, minus rewards points of -. Receipt total $8.00. I was billed ( not pending ) $23.00, the item has not shipped. Amazon says it will change when shipped to $8.00. So until then I have a charge on my account for the full amount, assuming the change the price and issue a credit to my account. Amazon thinks this is a normal practice, the credit card can only dispute the charge. I do n't think this is legal, but I could be wrong, someone is making money on this money in limbo '' and someone is paying for it. Please feel free to call me if required -, Please let me know what will happen. Please fix this practice it 's just not right!