Worst service ever

I called Fnb private client , shocking enough my call was answered by someone who claim to be a assistant team leader, Ayanda Dlamini,she therefore asked me questions which were truly uncalled for I patiently answered 3 but she continued asking me irritating questions, my argument is I had already verified myself why ask me 10 more questions finishing my airtime. I requested her to call her supervisor, surprisingly I was told there was no supervisors in the floor they were all gone home. Oops this bank is truly disappointed to say the least. I just want to move all my funds to a better bank that knows the meaning of client services . I was kept holding for almost half an hour, you could clearly see the lady told herself she was sorting me out. My question is if she knew the supervisors were all gone why keep me holding ?♀️Truly this is the worst service I have experienced since I started banking with this bank . Can you please book Ayanda for a client service course