FNB ********ly changes my account settings and charges interest

<p>After much hassle and trouble (as always with FNB) I managed to set up a debit order from my cheque account to repay the full amount due on my credit card monthly. Last month, all of a sudden, this was unilaterally and ********ly changed by FNB. Only the minimum payment was debited on my cheque account, leaving a balance on my credit card and I was charged interest. I tried the online chat facility on the app, because who has time to try and call a call centre and be on hold for hours.. So the problem was reported but 2 weeks later this has still not been fixed and I have no correspondence from FNB. If I knew who my so called private banker was I could have contacted them, but communication is not a strong point at this bank.....</p>