Bad service

So i have two accounts with dstv which i pay 730 on the 28/11/2017 i Transfered money on my capitec app by mistake i used my granny if as my reference number so the payment would go on her account instead of mine so i wanted to avoid all of this and i called in the agent who assisted me said i could get my refund once its reflecting so the next day i called in spoke to noxolo camaga on the 29/11/2017 enquiring about the process of the refund instead she told me that i cannot get my money as its me who paid it in regardless that it was a mistake and i confirmed with her more than three times and she insisted that i cannot get my money back which i did not understand and the money will stay on the account and will cover the remaining months to find out today that the dstv has been disconnected and the info she gave me all was incorrect