Standard Bank Is Not Closing Account

Good day, I had a garage card with standard bank which i closed almost 2 years ago. i used to receive monthly statement for the account, and if i skip payment standard bank will call you within 3 days for rectification. But since the account closure i never receive monthly statement or phone call from standard bank of course i was not surprised by not receiving the statement because the account is closed. Last month i closed my revolving account as well to my surprise today when i login to credit on Experian App garage card is still owing and is active. i immediately called Standard bank and they confirm the account is active. Since the account closure they never call or even bank statement for update. but at the same time the account is charging on a monthly basis as i was told telephonically. My revolving account which i closed more than twice apparently is still active and the amount is building up again. I am so disappointed. i think they are doing this intentional, i am appealing to people out there be aware of this ****. Every time you closed your account telephone ask for letter to confirm that the account is closed.