i want my money back

On the 23rd October I submitted a claim to be paid back to me. This is the first time discovery had to pay me back. After literally numerous calls and pushing up my phone bill I get told they paid my funds in on the 2 November to the wrong bank acc and that it is my fault. I should've updated my banking details. I didn't know that. If I knew I would have done so.I eventually updated my bank details Monday when I was told to do it.after numerous calls again I asked a simple question why I wasn't called before the claim was paid out to confirm my bank details and I was told its not discoveries duty to call me. I should've made sure my details are correct. I was told my money was paid into my old acc and payment didn't reverse that was wednesday I even have a letter from Tracey at discovery stating this. I went to the bank Thursday who confirmed the payment did reverse because my old acc is closed . I called discovery again and by now was furious only for an agent to tell me the payment bounced back to them Wednesday already.that girl asked finance to send the payment to my new acc and I still don't have my money.11 business days later I want my R986.30. I am sick of discoveries ****