Worse service ever

On Monday the 13th midday I discovered that a transfer of a total amount of R11 618.03 was transferred from my account to the account I don't know. I had R3941.97 in my account and they made an overdraft of R7676.06 which makes the total amount transferred. I reported the matter to the bank same day and they promised to call me back but didn't. On the 15th I called again and was told to wait by the consultant only to find out that she dropped the call on me and I was picked up by another who said he will forward it to the right department was not called and I called again and was told that an email will be sent to the right department again and there was no call. I am worried because my account is closed and am getting my salary on the 20th and this matter is still not resolved. I trusted the bank with my money and this is the second time something like this is happening to my account.I fear that I might not get my salary on monday and there's an overdrawn amount which might affect my account .It is shocking that through these trying times like this I have been tossed up and down from consult to consult with no resolution to the issue.This is having a very negative impact on my health as I have heart ; diabetes : blood pressure and depression sicknesses.Regards N Ntantiso