Start with the merchant send two emails.
The first stating you have not purchased anything from them regarding the transactions, if they have a receipt or transaction information send it to you to review otherwise this must be a mistake and kindly ask them to reverse the charge.
If nothing is received back then go down the
"upon review I see this are related to a gambling transaction, miscoding is a visa/mastecard violation, is eligible for chargeback and is considered transaction laundering, it’s illegal ect"
This leaves you the option to go down either route with the bank, I didn’t purchase anything from you or you miscoded/disguised it
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