Debit orders

Received text messages that am trying to link my app to my banking profile when I called the bank they blocked my banking and all . Which I removed all the funds in the bank before calling so am safe . The feedback received was that someone tried to log in using same username as me which did not make sense coz our accounts are linked to ID numbers . So am suppose to go to the branch to unblock everything . The following morning I received debit order bounced back . I called and asked why they bounced because my debit orders go off the 26 and today the 23rd . The consultant in the debit order department just spoke to me without authentication questions , she just spoke out of nowhere without viewing my account . We spoke for almost 10 mins only to be informed she can’t access my information I had to be transferred to another department for my details and back to her . Mind that I wanted almost 15mins for the debit order department to assist . I am tied of FNB . It’s the worst bank ever . Even thinking of just closing the bank coz the service received the past few months have been the worst.