Unprofessional, worst banking service.

My wife settled her personal loan with Std Bank in February 2020, the FULL ammount was paid. They never deducted the debit order again after that, and, according to us, the loan was settled and history. Until last week. We are in the process of buying a new home, our current house is nearly sold already, and we need to get a move on with the process of applying for and registering our new bond. So it came out last week that STANDARD BANK instructed Experian Credit Bureau to place a default on my wife's name. For this loan that has been settled, early settlement, no late payments! Now this default on her name is making her credit score too low for a home loan, and our application cannot be processed. We are furious with Std Bank, this is **********, unprofessional, and unexceptable. My wife went to the branch to have it sorted out, and even the very friendly clerk at the enquireis desk shook his head in disbelief. Apparently the bank gave instruction to all credit bureau's to remove the default, but this process is taking FOREVER!!! By the time this is done, the house we want to buy is long time sold to another party already. We don not only expect an apology from Std Bank, but we expect some kind of benefit to be given to us for causing us this frustration. We demand answers from Std Bank, how does it happen that such adverse info get mistakenly placed on your profile, and how is it possible for the bank not to be able to manage this properly???