Overdraft fees on settled account

I generally don't have any complaints about Absa but you've charged me overdraft fees for a settled account. My account is in a positive balance yet I was still charged my "deduction" fee as if it was in the negative. I've received no help from call centres and even when contacting a branch I still can't resolve this matter. Please contact me ASAP to have this matter resolved as I work 9am to 9pm and am not able to go to a branch.