NO RESPONSE FROM FNB CREDIT CARD DEPARTMENT

I sent out 2 complaints, even after I received an apology from FNB, I have still not heard or received an email regarding my complaint?! Can FNB really take this long to fix a small problem? I don't want to make this an issue but can someone please deal with the problem immediately. I shouldn't be placing constant complaints to receive some form of response? SEE COMPLAINT BELOW

I have a problem with the credit card (online). I increased the limit twice and even though fnb offered more and my requested increase was lower. It states that its approved but no change in the banking account? could someone please fix the problem. This is not the first time, but I am not here to complain, just needed help as customer service doesn't reply to emails.