Incorrect Debit Order Date

Since taking out my loan with Capitec in December I have requested the debit order go off on the 27th of every month as this is when I get paid. Chantal had assured me that the debit order would go on the 26th,I agreed to this as the 27th is the next day. Since then this has not happened! Debit orders have been going off on the 24th of each month and upon enquiring in order for this to be rectified I have to go into a branch with my payslip and ask for the date to be changed! I see no reason as to why I have to inconvenience myself as I have requested from the beginning for the debit order to on the 27th! And to top it off I am being penalised for your mistake! This unacceptable and I would like this to be rectified ASAP.