Dispute Debit Order loan

Hi FNB I've been banking with you for 19 years this is my worst experience so far, 2018 I had two separate loans with you, then your consultant advice that I qualify for consolidated loan which I thought was a great idea, I took it Nov 18 & I was informed current loans where settled however the two loans went off on a debit order ,which I understood because I took the consolidated loan almost before my pay day, so I imagined debit order was set already so, I called your general inquiries to reverse the two loans as they where now settled that was in, Now 18 , to my absolute horror yesterday two debit orders went off yesterday, 25 Nov 19 because there was a mix up the loans where still outstanding , okay maybe indeed it is the case but couldn't FNB call or sent me a note earlier notifying me of the outstanding instead of just debiting my account because my salary goes to FNB , as a results my other important debit orders where outstanding and some of my payments affected , so I called yesterday your loan deparment Ref Rr ********** 3643 Ispoke to a consultant explaining the situation she promised to phone back, she did after speaking to admin they said loans where still unsettled thats and they cant reverse or make any arrangements with me why , so my question is it reasonable to debit my account without my consent and informing me does it make sense paying a total of R10,468.6 just for loans when one is not even informed of the current bill , I am not disputing that I might be owing FNB for those two other loans but why 5 months later you discovering that & say nothing to me decide to inconvenience my life, I told the consultant yesterday that if your admin cant help me I am going to reverse & stop these debit orders which I just did and consider moving my account to a bank that will respect me and just not debit without at least notifying me , I need some one who can deal with this case professionally and do the right thing , your admin team is unproessional period.