Incompetence consultants and ridiculous services and excuses

I'm reporting FNB credit card department. For the past 3 months i have experienced very bad service from FNB. Three months back I paid my installment via debit order as normal and they failed to allocate funds to my account. Called and spoke to a guy and said they were experiencing issues with system and he allocated funds. He advised that he need to reload debit order and I accepted the mandate. End of March and now April debit order was not collected. When I phoned end of March I was told matter will be investigated and they will come back to me, no one gave me feedback. I had to make a transfer between the accounts to make a payment. Today when i call consultant keep on dropping me. Yvonne that I spoke to she said Fnb was trying to debit the whole balance. Who gave them authority to do that? No one want to take responsibility. There is no footprint on their system who loaded a debit order. What kind of the system that doesn't keep records of consultants that load debit orders? That ridiculous. Yvonne dropped the call after telling me she is checking something. Spoke to another lady again she was very rude talking on top of me. She was about to load a new debit order of which I'm not sure if it loaded or not because she dropped the call when asking for her superiors and asking for complaints department. Spoke to another one again called Reaketseng she refused to transfer me to team leader stating that since they are working remotely there are no team leaders. What kind of company that doesn't have team leaders, that is lame excuse for bad services.

I need this to be resolved in 24hours as it affects my account. Again, if there anything charged against my account because of incompetence from your consultants to be reversed immediately.