FNB ATM *****ing money

FNB ATM’s now ***** your money. On the 26th of October I went to the ATM’s at Metlife Mall to deposit cash into my FNB account. I entered all the details and then deposited the amount of R650.00. The machine returned R250.00 (accepting only R400.00) and it then gave me the option to insert the rejected notes again. I selected the option to insert the rejected notes again, and inserted the R250.00. The ATM them suddenly showed a message “cancelling deposit” I stood waiting for approximately 10 minutes with the screen just showing cancelling deposit. The machine then popped up a message showing “deposit unsuccessful and didn’t return my money. I called the FNB ***** line and was advised to go into a branch to report the incident. I went into a branch and gave them the slip from the ATM to report and claim back the money. All fine and the claim was submitted. I received a notification that the claim was successful and I will receive the refund within 24 business hours. Tonight I get a notification that R 400.00 has been deposited into the account? What about the R250.00? There are cameras and surely these advanced ATMs must have a full history of the transactions. You cannot ***** my money and expect me to just leave it! FNB service has gone down in recent years.