Very poor customer service

Terrible experience Nedbank put a -R21 000 BALANCE ON MY ACCOUNT TRIED CALLING KEEPS SAYING CONSULTANTS ARE BUSY AND CUTTING THE CALL.. GOT SOMEOEN ELSE TO CALL THE NUMBER NOBODY HELPED THEY JUST SAYING IT COULD BE DEBIT ORDERS YET I HAVE NO DEBIT ORDERS GOING OUT HOW AM I SUPPOSED TO GET PAID MY SALARY IF IT GOING TO DEDUCT IT ALL BECAUSE IF THEIR MISTAKE