Debit order switch not done

FNB … this is my 3rd complaint and I’ve been banking with you for less than a month I think … smh! First of all, I asked that you switch my debit orders through your app, none of that was done as a result my home loan and vehicle finance missed payments for the first time ever resulting in negative listings with credit bureau. Had to resort to calling my creditors for action from their end. Secondly, I went to The Grove branch to request that my banking fees be debited on the 23rd instead of 17th I’m seeing on the app - is the app slow in updating this date or is the case that it was simply not done?