FNB revolving credit facility

I opened a revolving credit facility at my FNB as well as switched to Islamic Banking on the same day as I was advised I could maintain both. fNB Islamic banking reached out to me saying I could not keep it under Islamic Banking and would need to close the facility which I agreed upon. I then contacted FNB revolving facility countless times over a months period attempting to reverse the initiation fee and the close the facility. Now, only after 1 month are they getting back to me saying that it past the 2 weeks/14 days where I could have reversed the fee. Obviously, I did that that but it doesn't help they only respond 1 month later. I tried through the secure chat and in branch where even the consultants could not reach FNB revolving credit facility whether by phone call, email or even Microsoft Teams.