Atrocious Service from Nedbank

Yesterday the 23rd of November I sent money to my Mobi-money account. I initiated a withdrawal and according to the ATM the transaction could not complete. On retry, the ATM advised that the transaction had exceeded the daily limit. I then noticed that the Mobi-money account balance was now zero. I called the Call Centre and spoke to Terence. She promised to call me back after resolving the issue and she never did. I called again and spoke to Phumulani. He failed to resolve the matter and advised that he will ask Terence to call me back . That call never came. I called this morning and spoke to a consultant by the name of Lerato. Having held for 9 minutes the phone just went dead. Like all Nedbank consultants she never called back. This is unbeliavable that a bank of Nedbank's magnitude should embrace such ineptitude amongst its ranks. Maybe I should revisit this banking relationship. Can someone please resolve this matter urgently. I want my R4000 back today.