Not cancelling upgrade of account and being billed for it

On the 2nd of March 2020 I by mistake selected to upgrade me bank account to a private bank account. Just after making the selection I requested not to proceed with the request. I sent a message via the FNB app and it was responded to. At the end of March 2020 I was billed for a private account. I then made contact again on the 2nd of April 2020 and requested again that the account should be changed to the original Platinum account. I then made contact again via the app. Now on the 2nd of May 2020 I'm writing a complaint due to incompetency. Speaking to two different bankers and still I get billed incorrectly. When I was phoned for my new card I told the DSV consultant that she should cancel the card.