bad customer service, cant explain process

I made a mistake by transferring R1000 into the wrong ewallet number. The person drew the money before I could reverse. I called FNB, to simply ask how can I take this matter up. Surely there is some process that I can take up with SAPS. The consultant was so rude, he just kept saying it’s your mistake, nothing we can do. So unhelpful. I know that it is my fault that I put the wrong number, but there is no need to keep shoving it down my throat. Really, I’ve been a client on private and premier bank for over 10 years, but I think I’m sick of FNB. Very bad customer service.