No resolution to problem created by FNB

I have been with FNB for 26 years and haven't had cause to complain until now. I was contacted by the ***** division to notify me of a transaction they believed was **********. My card was blocked while I investigated. The transaction was legitimate, I unblocked my card and attempted to put the transaction through but it was rejected by the company because of the initial rejection. I then attempted to contact FNB ***** department, credit card department to get this resolved. After at least a dozen phone calls to at least 6 different numbers I eventually simply gave up. Shocking standard of support from FNB. Each service person I spoke to was polite but they all said the same thing - you are through to the wrong division, let me give you the correct number. I would then get through to a voice-operated service that requested my phone number in order to retrieve my account information. After entering my phone number, the only phone number that I use and the one that is on record with FNB, the voice operator announced that it could not recognise the number and that I should enter my phone number!!!!! I went from pillar to post with no resolution and had to admit defeat so, my problem has not been resolved - nobody could tell me why FNB rejected the transaction in the first place and nobody at FNB has been in a position to resolve my situation. Not happy at all, I have been left feeling totally frustrated and totally unhappy with the service from FNB