It seems like Visa still has some partners who allow cryptocurrency transactions using credit and debit cards. Very large and mature companies such as Visa and Worldpay (now owned by Vantiv) shouldn’t be creating duplicate transactions. From a survey done by LendEDU, 18% of Bitcoin purchases were done with a credit card . While this isn’t an overwhelming percentage, banning credit cards would remove one way to buy them. LendEDUOf the 18% that used a credit card, 22% of them did not pay off their balance after buying Bitcoins.

Source: Forbes February 19, 2018 19:07 UTC