Poor Service

I would like to express my dissatisfaction with the manner in which I think FNB treads its clients. I am the holder of FNB Platinum Credit Card and my minimum payment due date is the 15th of every month. However, on Friday, 12/02/2016 , regardless of the fact that I received a message that my minimum payment is due on 15 February, FNB attempted to collect from my account. And on the 15th February 2016, the minimum due amount was debited regardless of the fact that I did not authorize automatic debit and was told that funds will be made available after 3 days (or three nights starting from Monday night). However, today is the fourth day but the funds are still not cleared. This morning I spoke to one of the consultants (Ref: ***3) who also confirmed that finds should have been cleared by now but I should maybe rather give it another day. I am skeptical that by tomorrow these funds will still not be cleared. Can someone competent please attend to this matter?