Disappointed

I am disappointed in ABSA bank. They made a mistake with a debit order which was for a personal loan I have with them. Because of this mistake my account has charges of R577.75 which I was told by the complaints department that it would be canceled because it was their error. That was 3 weeks ago. I have phoned on numerous occasions since then and have been sent bank and forth between different departments and still no one can help me. I need this to be taken care of as I already am broke and this just puts a massive knock on my account. Please I just need this to be sorted out. I'm tired of fighting.iv been a loyal customer with absa for almost 10 years and this is the treatment I get in return.