JET Unauthorised Charges.

Jet stores belonging to the TFG and RCS group are not a Reputable Company. Since November we have been Charged R46 a month for the Jet Club Fee. I have not app**** or Requested that this be added to my account. Every month I phone and every month I am told it is Cancelled and the amount reversed. From originally owing R92.00 I am now told that I owe R253.00. How can any company just add charges to your Account without your consent. RCS are not an Honest company and consumers need to check for unauthorised charges.