No contact or responses from FNB

I am beyond frustrated and annoyed by the service FNB is giving its clients under COVID-19 where most people are Under financial Constrains. Some insurance companies saw a loop hole to con people because they know that reversal of debit orders are impossible to happen and there’s no ***** department that’s operating. Since the 20th April 2020 I have been trying to reverse an unauthorized debit order from my account with FNB but no success. FNB App is not working, cellphone banking is not working and the call center is closed. What are we supposed to do? A whole private client like myself is unable to get help.