Settled account reflecting as in arrears

I recently became aware that my Standard Bank vehicle and asset finance account which was settled on the 20th of February 2015 reflected as being in arrears at the Experian Credit Bureau when I was refused a cellphone contract. I sent a mail to vehicle and asset finance on the 1st of September, requesting that they please update my profile at Experian and advise when done. To date I have not received even a confirmation email. This is not the sort of service I came to expect from Standard Bank. Please correct my information at Experian ASAP as I can not obtain any credit or contract whilst my credit record reflects that my account is in arrears. I mean this account was SETTLED (Paid in full) 7 months ago, that is the reason I stopped paying... I received the NATIS documents from Standard Bank already.