Incorrect debit order dates captured

We've been fighting with Nedbank Mokopane for months now. The incorrect debit order/payment date was captured on my profile. I am a Nedbank client, my salary is paid in on the 25th. They selected an earlier payment date, this was an error on their side, as per the Branch Manager, Terrance. This resulted in the credit department listing me as a late payer, yet I have 7days to pay from the due date, but clearly this doesn't apply to me. When I queried this after receiving a Transunion statement, Terrance committed to getting this removed and cleared on their system. He also changed the debit order dates to after the 25th. But he didn't clear it from the system, and I am still listed on Nedbank's system as a late payer? How can my own bank list me as a late payer because of a error on their side. This has costed me endless, unneccessary visits to different branches. I've tried getting this resolved at the Alberton branch as well, with absolutely no joy.