Why does Nedbank not adhere to their own 1 Business Day time commitment on client facing requests?

On Saturday at 11.53am I submitted a request to cancel my Nedbank overdraft, I received a notification that Nedbank has received my request and will attend to it within one business day, that would have been MONDAY 23 May 2022, it is now Tuesday 24th May and effectively TWO business days since I submitted my request, and I have just noticed Nedbank has NOT action my request. NEDBANK I WOULD LIKE TO CANCEL MY OVERDRAFT AS PER MY REQUEST FROM SATURDAY21 MAY 2022.