Atrocious service from Standard Bank Credit Card

As a Standard Bank client I have received such atrocious sub par service and it’s truly frustrating from their credit card department!!! My credit card payments are done by debit order everything month, the debit order went through from my account as usual. Next thing I am getting sms and emails says I have not paid and need to pay urgently, I call the Standard Bank Credit card department and ask what is going on because this is debited every month, I am given an email address to email proof of payment. Which I emailed immediately as I wanted this issue resolved and I get no response. 3 days later I call again asking if the problem has been rectified as it will affect my credit record and no nothing has happened no one is even making an effort to assist!!!!!