Paying for something I dont own

Telkom is charging me for a service I did not order nor have. I orders a wifi router through mondo for their wifi and extrender (which I did not get) during the july special. I was patient as the order was late and mondo did apologise for it. But then I was charged over the agreed amount which was R299.. im now been charged R430 . Apparently I have orderd a sim card with a 1gig thing they give you monthly called a free me which I was not aware about. I complained about this issue and was given a form to cancel this sim but it was not cancelled at all. Then I was told that I will have to pay a penalty for canceling the service! Why must I pay a penalty for a service I dont use !? I dont even have a spare telkom simcard that apparently came with my package!? I am infuriated by telkom and how they take advantage of their clients. I refuse to pay any penalty for a service I have not authorised and I want it cancelled or they can cancel their entire service all togethrr and take their wifi router back!