******* deductions in my Bank account by FNB

Goodday

FNB i busy with ******* deductions in my account and they ae not even willing to cooperate with me. For all my transaction i have made i had enough money with my account and FNB wait until there is no money in my account to clear all pending transactions so that they can bounce back in order for them to charge me penalties of R150. Again yesterday an amount of R18.68 is also been deducted from my account without valid reason. Can FNB stop *****ing my money pls.