HORRIBLE CUSTOMER SERVICE ,WILLING TO HELP

I was thrilled with FNB up until my mom had a debit order she doesn't know anything about and they also couldn't explain even now she is still experiencing the same problem and every time when we go there we are sent from pillar to post , We even tried going to ABSA for help as the account number is from ABSA, but they couldn't help, so now the problem still hasn't been solved,they are not even trying to resolve the matter, We filled in Debit order ***** forms but still Nothing...We are all considering changing banks ASAP, as going there is a total waste of TIME