“The Consumer Financial Protection Bureau received more than 26,000 complaints regarding credit cards last year, with billing the most common reason. But intense competition in the industry means credit card companies can be responsive if cardholders call.” Read :

Here’s proof that disputing your credit-card bill could be worth it

http://www.marketwatch.com/story/heres-proof-that-disputing-your-credit-card-bill-could-be-worth-it-2017-04-13
The CFPB is the consumer’s best friend in the financial services marketplace yet it is under attack by the Trump administration.  How soon politicians have forgotten the horrors and agony of the 2008 global financial meltdown caused by banks and mortgage lenders. Check out the CFPB’s website and learn how the agency, created in the aftermath of the financial disaster, can help you and your family: https://www.consumerfinance.gov/. The CFPB is a “U.S. government agency that makes sure banks, lenders, and other financial companies treat you fairly”
Source: Financial Planning for Women