Bad service

I received money from a friend and it reversed after 4 days and worse after I have used the money and my account was on a negative. I went to the Oribi plaza Branch to see what happened and resolve the issue because the money was reversed but did not go back to the sender. I was given an incident number which is ***6 and I was told to come back after 7days. 14days later I went to the bank and still couldn't get assistance because they also didn't have answers. I then messaged Capitec on Twitter they gave me a number to call and still also couldn't get and answer what happened but my money was being taken every time when someone deposit into my account. Capitec has now taken an amount of R600 which I still don't get an answer to where has it gone because they still have answers but taking the money but not sending it to sender. I am so angry right now. This is unacceptable!