Poor Client Service at Capitec

My details are as follows

I made a deposit through my online banking with Capitec to my bad i entered a wrong recipient's number instead of 079 I entered 076 and at the end of the transaction it was successful i then called the person i was sending the money to only then i realized that he did not receive the cash Immediately called the number to ask the person to reverse the transaction only to find out that the number does not exist I called Capitec to let them know of the error i was told to visit the branch on Tuesday which is today the 28th April 2020. I go to the branch at Sam Ntuli Mall i was assisted by Sibongile she told me there is nothing they can do to help me get my money as i need to call the number to get the person to reverse the funds i told her the number does not exist she told me i wont be able to get my money back

can you kindly assist and advise how am i supposed to get hold of the person i mistakenly sent the money to if the number does not exist?