Bad Service from Nedbank

Nedbank I deposited R8000 into my current account using ATM.. I got the slip and SMS notification telling me that money was in..... I then transfered all my money to my cheque account my current account was left with R0.. But the following morning I was greeted with a message telling me my current account is overdrawn with -R8000... The consultant called me to the branch telling me my money isn't reflecting on your system he took R8000 on my cheque account and put it in my current account which had -R8000 and told me it will be refunded to me after investigation... Nedbank I want my money please it wasn't my fault it was your system