FNB Customer Service is Shocking!

I have a current credit application at another financial institution being blocked because of multiple settled/closed FNB accounts still reflecting as open on the credit bureaus. I have been trying to get assistance for paid-up/closure letters for these accounts for the past 10 days from FNB following every single channel they offer, but is just being sent from post to pillar by all departments. This is by far the worst service I have ever experienced. This is also not the 1st time I've experienced horrible customer service from FNB and will definitely be closing all my accounts with them.