FNB Bad service!!!!!!!!!!!!!!!!!!!!

I am very disappointed with the service of FNB, I spent most of my day yesterday 03/06/2020 trying to reverse a debit order that i have no knowledge of, When I spoke to the consultant in May 2020 to have the same debit order reversed i asked to make a note that the debit order does not go off again. I spent and hour on my cell phone my air time being passed from one consultant to another, 4 consultants later and 1 who could not hear me at all and i could not hear her, she just put me right back into the call center, being verified by all I get to the last person who gave me attitude and cut me off. I tried the online chat with a banker who again referred me to the same call center. Having no joy, i walked into the Northmead Benoni Branch only to be told i cannot be help i have to go through the call center, i then called from the branch and only got the automated call center. All the lady could say was sorry we can not help you. MULTID FORAANDG R1050. was debited off my account, In May R470. was debited, I dont know who these ppl are or where they from, As far as I understand, was FNB not supposed to alert us before these debit orders before it goes off our accounts, is that not what the debie check is all about?...Please can someone get back to me or I take my business to another ban****!!!!!!!!!!!!!