Nedbank ATM DeposIt Horror

I have a Nedbank credit card which I pay my instalment monthly an mostly I pay using ATM Deposit as it is convinet for me. I was only surprised with call that my account is on overdue and I didn't make my payment for April. And I did pay my account with R500.00 on the 03 April 2015 at Protea Glen Mall ATM Depositor.<br> <br> I went to check my email statement only to find that there is three payment of R500.00 showing on my April statement and when I check my May statement all the payment is been reversed and my account was never credit with the R500.00 payment that I Payed.<br> <br> And my instalment used to be around R450.00 and now is R2300.00 within one month. I being in and out branches and calling call centres I cant find help.<br> <br> 1. WANT TO KNOW WHAT HAPPENED TO MY R500.00 APRILL PAYMENT.<br> <br> 2. TRANSACTIONS DOESN'T CORRESPOND WITH THE INSTALMENT.<br> <br> 3. WHY SHOULD I PAY FOR NEDBANK ATM SYSTEM ARRAS.