REFUSAL OF REVERSING DEBIT ORDER

FNB refuses to revers debit oders as per instruction given to the agents as of *** i called in to revers a debit order on my glod cheque account,after a few minuits holding for an available consultant my call gets answered,i tell the consultant that i want to dispute a debit order that went off of my account on th 11th of April 2020,she then logs into my profile to check if indeed there was a debit that went through that day of the amount specified,she then proceeds to explain that since the amount i want to revers exceeds the threshold amount of R200 i should escalate that query to the service provider involved as "they"(FNB)are no longer approved or mandated to revers any debit oders over that amount mentioned above as of 03/04/2020.This has now left a bitter taste in my mouth as i no longer trust my banker to render me a service and also raises a concern of security that anyone can get a hold of my funds without challenge or dispute of which i am lawfully entitled to.I am extremeley dissapointed of the service i got and i request for answers as to why these regulations are put in place without the clients consent or awareness