Unfair Practice

In November 2015 , I was called buy a telesales agent from MRPmobile. I was sold a device on the pretense that through using the device I would be earning points that I could then use at any MRPgroup store and that would somehow pay for the device. I agreed to taking the device. the device arrived at my place of work through a courier company MRPmoblie uses to deliver their devices. I then proceeded to open the box and check that the device could switch on. I inserted the card as instructed in the MRPmobile device handbook. The handbook said that the sim card would take 24hrs to activate. The next day I checked the device, there was still no network and the "no sim" sign was showing. I called the call centre and after holding for 20min someone eventually picked up. I explained the story to call centre agent who said she would investigate the matter. I proceeded to inquire to the facts of the selling points that sold me the product. She told me that I had been misled and that she would investigate the matter further. The next day I switched the device on and the screens pixels were completely disfigured. I called the agent again, also because I still had not had feedback from the previous day. I explained to her what was happening to the device, she told me she had listened to the recording and she had found what I said to be correct also now that the device seemed to be not working and my sim still not registered , I asked if i could please cancel the deal , which I was well in my right to do as it was within the specified time to do so. She then told me I would be charged R585 for opening the box ! I told her that I will never pay that money as it is my right as a consumer to open the box and check that the device was working. We arranged for the device to be returned to MRPmobile, the courier came to collect it the next day. Since this incident up until this day I have explained myself repeatedly to people calling me to pay this monies. I have been handed over to lawyers who harass me on a daily basis via sms , e-mail, telephonically with threatening letters of demand! I have been listed on the ITC !!! and no one seems to listen to what I am saying. Please could I be assisted in this matter.