Addition of Products to Edgars account without permission

In May 2018 a cell phone, air time and data contract was added to my Edgars account without my knowledge. This apparently was loaded onto my current Vodacom contract. I only discovered this in October when I was looking into my account statements. I logged a call at Edgars to have this cancelled and refunded as I was not receiving any of this airtime or data they claimed to be giving me. Edgars could not assist me as I had to call RNCS to have this cancelled. They were contacted several times in October and no reply. I contacted Edgars again and the lady assisted me to call them and finally got hold of them after 20 min of waiting on the phone and they said they finally cancelled the contract on the 18 Oct 2018. They indicated that I will have to log another call to get a refund which I did the same day. This process should take 7 days. I called again on the 15 Nov 2018 as no communication came about the refund. they said the refund call was never logged. They logged a new call on the same day after I asked to speak to the supervisor. again no person called. I called again 12 Dec 2018 as I had still not received any calls about the progress of the refund. they indicated that the call had been closed and they have no information. I asked to speak to the supervisor on shift to assist, but the operator just cut the call. Called again on the 19 Dec 2018 and they indicated they don't have any information, I asked to speak to the supervisor again and she eventually told me that the refund cannot be processed. I asked for the details of the person who had loaded this cell contact onto my account and she cannot help. I asked to hear the audio recording of where I had accepted this offer and I was referred to a queries mailbox. she indicated that the admin department are the only people tat can assist and they don't have a telephone number on mail box.