Poor service FNB

I am on a bundle package which requires a minimum balance to be maintained in order to waiver the monthly bank charges. Last month FNB deducted R219 in bank charges. When I questioned this I was told this was an error and the bank charges were reversed. Well, this month, FNB have once again deducted R219. I have contacted FNB twice and to date nil response. Very poor service FNB. Warning - check your bank statements. These banks think they can deduct charges as and when they like and if you don't check your statements you will be none the wiser!