Std Bank incompetency

I have been struggling for months now trying to arrange debit order dates but still it is a total mess. Goes off on different dates every month, sometimes (like this month) it goes off twice. Aftet numerous phone calls and waiting on the line for nearly an hour I am told they can not reverse Std bank debit orders. I have been at the branch as well a couple of times but still the problem is not resolved. I am forced to stay with them because of credit card and loans. Its pathetic!!!