Big hell of a ****

I have just been ****med by this company they took R390 from my account and worst part i dnt even know who they are and i cnt even reverse it as it shows its a card purchase. How the hell do the even get ppls card details. Did anyone ever get their money back? Capitec: Payment -R390.00 from SAVINGS ACCOUNT; Ref COMPUTECH CREDIT SERVI Glenvista ZA; Avail R; 23-Sep.