The US regulators ordered them to refund $59.5 million to more than 335,000 consumers and pay a total of $16.2 million in civil penalties, reported Xinhua.

American express and its three subsidiaries, American Express Travel Related Services Company, American Express Centurion Bank and American Express Bank were accused of taking unfair billing tactics and deceptive marketing with respect to credit card add-on products such as payment protection and credit monitoring from 2000 to 2012, said the Consumer Financial Protection Bureau (CFPB).