He has a case with the card issuer. I'd suggest he get on the phone with the card company and ask for a 2nd level support or manager, then tell them to reverse

He has a case with the card issuer. I'd suggest he get on the phone with the card company and ask for a 2nd level support or manager, then tell them to reverse the charge. He never responded YES to allow the charge. The reason for that type of check over SMS is due to an aggreement between the card issuer and the card user to prevent fraud.