So fed up with FNB

I cannot understand why FNB make it so difficult for us to contact them. I left a complaint on FNB Contact but, as usual, no reply. Unless you have cash to afford a long time in a queue to a Call Centre, you are stuck. Neverthless I think it is very strange that when I had a small credit balance on my FNB card for the entire months of6 September statement to 4 November statement, I received no interest payment. They did not forget to charge the Credit card account fee and Credit Facility Service fee. By the way, I do not want a Credit fability on the card but they insist I cannot remove that. Defies all logic !