Clientele doesnt want to Refund

Clientele took my money R507 and the worse part I'm a student and that is my grocery. I called clientele they told me I accepted a funeral policy, I told them no I did not, they said they were checking if I qualify for voucher when they asked for bank details but I told the guy I don't want anything because I'm not working. On the 24 clientele debited R507 when I called capitec to reverse they said it's a debit check but I have never receive notification for debit check and when I called clientele they don't want to refund me the lady just wanted to sell other products instead and I need my money back as soon as possible.