unauthorised transactions

I went to nedbank in kenilworth centre on the 31/01/15,I wanted to open a new savings account for my daughter,when we got there the agent advised that's its not closed,then she said that she closed my account accidently,she then gave me a new card and then advised me to not change my pin,told me that I don't have to pay for the card because she accidently closed my account.I then got a bank statement at nedbank claremont main road as I noticed money disapearing according to my bank statements these unauthorised transaction has been from the 18/02/15.The manager nedbank claremont main road branch code 107809 advised me that I will get a call regarding this matter on the 16/04/15 I have not heard a word from nedbank and feel this is a very urgent matter I feel this should be handled with high importance and the least they can do is keep me updated but yet I am again disapointed.I need to know what is happening regarding my money and I have given them an affidavit in the bank.I