In December 2009 , MBNA admitted overcharging 500,000 Irish consumers approximately €18 million .
Affected people were advised to complain to the relevant authorities.  company in December 2009 admitted overcharging 500,000 Irish consumers up to €18 million.  : //www.independent.ie/business/irish/mbna-to-pay-back-836418m-to-500000-in-card-blunder-1975079.html