MONTHLY ********** DEBIT ORDERS

I am fed-up of all the ********** debit orders that FNB allow through your accounts. Each month without fail we have to stop/dispute these debit orders. However, the ********** are clever and you do not have a DISPUTE option on on-line-banking and the STOP button does not work on these ********** debit orders! This then costs us time and money to go all the way to our local FNB, which is about 35kms from where we stay to stop them. How the heck do FNB allow this without any authorisation!