FRUSTRATING EXPERIENCE

On 30 January 2021 I called the Head office of Nedbank to close my American Express credit card. I paid the outstanding balance and was advised that the account will be closed. On 01 Feb 2021 at 14:40 i received a sms with Ref ***0 indicating that the account has been terminated. When I went onto my profile a few days later, I noted that there were an outstanding balance and the account was still active. I chatted to service centre via the app, but this was extremely unhelpful. I was told to pay. The fault is at Nedbank and not with me. How can I be held liable for outstanding balance after believing that my account was closed - this if proof by the sms received. I requested a call back, but this was also said, could not be done by the person on the chat. This is the first time Im experiencing a problem with Nedbank, and it is frutsrating. PLEASE CLOSE THE ****ACCOUNT!!!!