Unhappy client

I was a client at FNB. I am very unhappy with there services. I had an bank account with FNB for two years. I took a loan out with FNB but I resently went and paid the outstanding amount on the loan and ask them to close the account. I have signed all the documents to give them permission to close my account but they never closed my account. As I went to the branch on 17 Aug 2020 to find out why am I still getting statements from the account that was sepost to be closed, just to find out that the lady that help me as the branch never closed my account and there is a outstanding amount of R51-86 that I need to pay before closing the account. For more then a month no one at the FNB contacted me about my account they never send any sms or email to say that closed the account or that there was any problems. I am very upset with FNB and would never use FNB as a bank again. They are quick to take your money but there services are not that great. I would not recommend to bank with FNB.