Outstanding debit card authorization

I've been trying effortlessly to get assistance from FNB regards to an outstanding debit card authorization on my account since 16 October. Secure chat, call centres are all of no help. Send from pillar to post, 2 complaints logged on their CARE system with no one bothering to phone or respond to my emails. I eventually spoke to a consultant at the call center on 19 October who advised that the problem with the card transactions will be resolved by yesterday. It is still not resolved! FNB, do you really think this is the way to handle complaints and service your clients?