Call centre operators always tell me what they CANNOT do

I inputted an extra number into the account number of the person I was paying, which means that the entire number I was paying was incorrect. When I called Standard Bank, they firstly told me everything they CANNOT do, which is psychologically so very negative, and then they said I can fill in a form to withdraw the funds, but this will cost me R300, and then they cannot even guarantee that I will be successful. Considering that the amount I paid was only R425, this does not make sense at all, and so I will not be querying it at all. Yayy Standard Bank. You have succeeded in making someone R425 richer due to not caring about what happens to my money. I get that it was my mistake, but I hate the way Standard Bank call centre operators cannot ever say anything positive, and leave me hating the bank more than I did before I called.