Unhappy Bank customer

on the 4th October i logged into my African bank app wanting to deposit funds into the other bank which is my account aswell. African bank app requested the first 3 letters on the account, i inserted that and automatically it brought up the account, i have before transferred funds and thought it is the same account. funds were transferred, 3days later i see that the funds did not appear, i checked the statement and saw incorrect acc, i visited the branch and was told to go to the other bank. the other bank then send me to African bank. mind you i have an investment account with African bank but they cant assist me with the R2000 transferred. I am going through a lot where on the day i did the transfer a week before that i had just burried my dad who passed away from a horrific accident, then i had to deal with my mother who was in hospital due to not coping with the passing of my dad. Honestly African bank is not helping at all. the bank received is from the African bank app which stated FNB.

My contact number is *** please contact me as i need to be resolved. I cannot lose my money like that, not especially after spending for the funeral.