Unauthorized payment

Was approached by these clientele brand ambassadors and as I listened them it looked promising. I asked them. More than once (just to make sure) if I'll be paying per month for this rewards program and they said no I won't be paying. The end of the month approaches and I see that clientele deducted R160 from my account unauthorized. I tried to get my refund back but tht lady told me that there are no refunds. I expected better from your service but clearly this is a new way to **** people. I want my R160 back cz I was **** to and given false information.