No assistance to update on Bureaus STILL

Few months I have been struggling with Experian to get my Nedbank account sorted out, Paid it in full, got all the documents sent through to Experian, last month was updated to paid, yesterday they changed it back to 2 months in arrears sending my credit rating crashing. I have repeatedly explained to them that thxis information is critical in me keeping my job and growing, due to their neglect, I have now lost a promotion, and the company has lost trust in me, as they gave me the money to pay Nedbank, now they see my report, and shows in arrears, company is not happy with me, I cant understand how this is such a problem, transunion, compuscan and XDS has updated to paid and closed, THANKS EXPERIAN FOR MESSING UP MY LIFE.