Zero service Received

I have urgently tried to get hold of FNB to reverse a ********** debit order from my account. After staying on private chat for more than 2 hours and trying to phone and holding on for more than 20 minutes at a time i do not know what’s left to do. i tried phoning 3 times during the day with the same amount of waiting time. Sad to say that i pay for this service. It is an embarrassment if I see or hear your ads and I know what service I have received.....