FNB again

I have an auto payment from my current account for my credit card that was setup by FNB. Until now the when the auto payment was effected it immediately appeared in my credit card account. Upon speaking to Andile Sibeko from FNB, I was informed that it now takes 7 days to appear in my credit card account. I requested a manager to contact me but from previous experiences I know that they will not. I was not advised of such changes. Who pays the interest for the seven days? Furthermore the date of this transaction was changed without my approval. Should I contact the ombudsman to resolve this issue? Surely it is not too difficult to advise your customers about changes and online system issues? Very regrettable for a top bank.