FAILURE TO CLOSE CREDIT CARD

I closed my Standard bank credit card account in October 2023, on the 6 Oct I paid settlement amount and 07 Oct called credit card closure department, but the bank still sent me statement for November and still want me to pay. I called again on 06 Nov and was told that I did not cancell the credit protection plan and transferred to insurance section, which stated that my policy does not exist and transferred me back to Credit Card closure, but call was disconnected. what a horrible bank service, never will in my life require their service, i will rather live without a banking service.