Declined Foreign t457

I have been with FNB for 4 years now and i am very disappointed with how poor their security is. For 4 years each year i have to deal with debit orders i dont know and transactions i have no clue of. Last year it was demand transactions from an account called Izinja this year i keep recieving 'Declined foreign t 457' which amount to R25 everyday!!! And i have tried to call their ***** line and i dont get any help. I am now strongly considering moving to a different bank