Chargeback Capitec

My husband recently got ****med, ********** transactions being deducted from his credit card. He approached the bank, and brought it to their attention that he does not know anything about these charges. As I understand phising ****s is highly likely in this regard, whereas his card details could have been intercepted, without his knowledge. The final outcome provided by Capitec is that he made these purchases, approved online by himself and the advise from Capitec is that he unsubscribes from these sites. We are not at all happy about this response. What is the bank's chargeback procedures, do they have such in place. Merchants have to supply proof that, he has in actual fact purchased stuff, sometimes 2-4 times a month. Lost all faith