Std bank dont recover for four months

Standard Bank: Hi ME V DE VILLIERS, due to a system error your card service fee was not deducted in June and July. These fees will be debited to your card on 14 October 2019. Queries? ***. How can standard bank recover monies four months later and put clients in a difficult situation. If clients skip one month they bring and threaten clients with courts but when the bank dont recover they can a few months recover. This is unfair. Why not add one month fee per month but now want to recover all monies ....This must be resolved or i take my account to another bank