ABSA non exiting Service

As a Private Bank Client, I struggle to get ABSA to deliver any service required. ABSA moved from Master to Visa. I collected my new credit card, destroying the old one in the bank. Bank did not stop the old one, ending up in an unauthorised transaction few weeks later for over R4200. Now it’s an absolute mission to get my money back, even though is a major oversight by ABSA. ABSA, you failed and continue to amaze me with the lack of service and urgency. How do you retain clients?? Even my online banking still reflects my old card details. What are you doing????