Disgusting Service from FNB

The level of service from FNB as dropped to beyond one can imagine. I had requested my debit order date be changed for my smart devices as my salary date as now changed, been chatting to consultants and then i finally had to call. I was advised telephonically they had changed the dates, however this morning the debit went off as normal putting my account in a negative, sent a request on the app they advise must call. I'm tired of the back and fourth with FNB where they have no clue of what they doing. Please rectify this and I will not be liable for any fees associated with these debits. Please also downgrade my account to the gold cheque account I no long need the Private clients account. Do not try to call me as i am not available just do what you have been told and send me confirmation.