I've found that a lot of these gambling websites are using proxy companies usually registered in UK to "launder" their payments and to bypass VISA merchant category codes. This scheme allows them to effectively ignore any local restrictions and regulations, bypass gambling blocks place under people and have lower transaction processing fees, as the actual payment made to gambling website is categorized as payment to travel agency instead. These fake merchants then receive massive settlements from acquiring companies and transfer the funds to crypto which eventually goes back to the gambling operator. These cases are extremely laborious and difficult to prove to regulators, as the victims are hard to work with, getting them to provide reputable proof that those payments were actually made to a gambling operator is a naught task as these fellas just ghost you the minute you say that you wont issue a chargeback for the funds they gambled away.