Unauthorized charge for a club magazine

I received a call from a consultant at Foschini offering me a club magazine and I declined. To my surprise I check my November and December statement Foschini has charged me R39 for club magazine, which I fail to understand because I never authorize for the club magazine, and I never received Foschini club magazine for over 5years.I would Foschini to refund me my R39 that I've paid into the account without my knowledge and send me a written apology for the inconvenient caused. Can Hellopeter please give me the contact details for retail shops ombudsman as I would like to take this further.