The issue of World Cup ticket reselling is the responsibility of FIFA and they have an enforcement team in place to deal with these matters when reported. In addition, Visa also works with its acquiring financial institutions if online merchant activity is identified as potentially illegal. Visa notifies its acquiring institution to conduct due diligence and take the appropriate action toward their merchant, including termination of its card acceptance privileges if warranted.
Cardholders who transacted with unofficial sellers and didn't receive promised goods should contact their bank to report non-receipt of promised goods and determine next steps for remedy. As a reminder, fans are also encouraged to visit FIFA.com to secure tickets to events, it is the only official place to buy tickets, apart from the Ticketing Venue Centres onsite.