Very very bad service regarding tracing an unpaid EFT

I did an EFT on the 2 December 2018 from my Standard bank account to another Standard bank account, unaware that the account was closed in 2015 . I immediately went to the nearest branch the next day to seek assistance to have the funds reversed they assured me the money would bounce back into my account in 2 days time, that didn't happen, I called the call centre on the 3rd day they asked me to fill a recall form which I did, they informed me it was unsuccessful and I need to go to a branch for assistance, which I did on the 10 December she logged a trace query, I have since made numerous calls to Standard bank with no joy. How can R 2,500 just disappear and no one knows what happen to the money. The reference of the trace query is ********** 101. How can Standard not know where the funds went to. I have banked with Standard Bank, all my life and am very disappointed with the service I am receiving regarding this matter to the point of closing all my accounts and moving to another bank