Bank not clearing my credit record on time after I have settled and paid up the loan

I called the fnb premier call centre to asking for assistance in having my credit record cleared as I have settled and paid their revolving loan and closed the account. I spoke to Sinclair on the 18 Dec 2017 and she promised to speak to the credit manager the following day and give me feedback and she never did and on Wednesday I call the call centre again and I spoke to Sinclair and she again promised me to follow up with the credit manager and she call me back before close of business to gives feedback and she never called back. I am disgusted and annoyed with bad service I got from FNB Premier Banking call center and being sent from pillar to post without my quiry being resolved and to think that I have been banking with them for over 25 year. They do not leave to their slogan on HOW CAN WE HELP, and they need to change it to We can not help you