ATM deposit unsuccessful at Clearwater Branch

I was using the FNB ATM at Clearwater branch on the 1 April 2021 to make a cash deposit of R1600 into my account after entering the reference number the ATM switched off and returned a slip saying my cash deposit was unsuccessful. Khati the team leader made me fill in a form and advised that it will take 2-3 days for the money to reflect. I've been calling the branch and all I'm getting is the voice recording now I don't even know if anything was done about my ATM dispute.