***** of R5990.00 occured on my standard bank account and it was not due to my negligence. However Standard Bank refused to reimburse me

I am currently in pain as I have been let down by Standard bank. This is disappointing as I had open an account with Standard bank because I thought that they are a reputable bank and they have integrity. This just shown me that they don't even live up to their own values. On Christmas eve R5990.00 was ****** from the standard bank account and I reported the issue on the same day. I was told to wait for the investigation to take place. This was difficult for me because it was my last money that I was going to spend on my family during festive. I have been unemployed since covid hit and this money was received from UIF. I had faith that I will be reimbursed as this was confirmed that it is ***** and it did not occur due to my negligence. However, after 10 days of waiting, I was told that I will not be reimbursed. This has broken my trust with standard bank and I doubt that it will ever be restored.