UNHAPPY/ANGRY NEDBANK CLIENT

am getting such a poor service from Nedbank , after they debited me ********ly 4 x times within the a period of 3 weeks , every time they do this I spend money on airtime phoning them and my bank charges are going out control because of their "technical issues"...am been told they are investigating and will come back to me which never happens , this is sod bad as I feel am being held hostage by the bank which was meant to be protecting my money and interests , till today am still trying to get help from this guys and this is money costing excersize on my side and this is a very hard and trying economic times .Super ANGRY!!!!!!!!!!!!!!!!!!