Imagine purchasing an amount of airtime with an extra zero that leaves you broke and get told it cannot be reversed

Friday , 16th February 2018. I accidently purchased R1000 i stead of my usual R100 . I have sufficient evidence to prove this .

I called mtn helpline hoping to be helped as I have just spent a large amount of money, on something that has no value in return . I spoke to the lady on the other side of the phone who explained it was not a data bundle so it could not be reversed , and after het attempt to put the call down I brought thee idea to buy a bundle worth 1000 rand and then maybe I could get my much needed refund . She then said she hasn't got the proper system or technology to do this sort of thing and that is when I asked how does mtn protect their clients from such purchases , these things happen all the time from what I understand , I hope to take this further with mtn not only to get my hard earned money back but to also have solutions to this sort of problem which is a recurring problem , I read an article where a person had the same experience and actually had his money refunded by MTN , so I hope that it would be possible when I go in-store and find out . Please help me !!!