Cell C Not a customer friendly company

I accidentally recharged with a R1000 instead of R100 from my Capitec banking app. I immediately called Cell c Customer service and Spoke to a lady called Happy who blatantly said that nothing can be done to reverse this. I checked here on helo peter only to find that there was a man who was assisted. I then called again and spoke to another lady called Khensani and she said the same thing that they cnt help me. I mean this is human error and a big company like Cell c Cannot reverse such a mistake. This is utterly disgusting and shows just how Cell C dnt think about people instead they grab the 1st chance and hold on to it to take money. This is the last money I had in my account so now they CANNOT HELP. what type of business is this where a transaction CANNOT be reversed.