I have disputed charges with Chase, Bank of America, Citibank, GE (Monogram), Capitol One (got rid of them years ago!), and Discover, and they all such on both credit card security and on disputes. They do not really want to adjudicate disputes fairly, they just want to get it over with as soon as they can, and they will default in favor of the merchant whenever they possibly can. By and large, they all stink!