incorrect bi?ling

Firstly I would like to say I am disgusted with the way nedbank handles there customers and I'm seriously considering changing banks on the 31st of November I received a sms stating 600rand was taken out of my account for a credit card payment even after me making an arrangement for payment to be made at the end of Dec secondly this was a an autorised payment from a different bank account I give nedbank legal department a call and was treated with pathetic customer service rude and abrut behavior on the phone by agents refusing to be of much assistance at all!no managers available to speak to what pathetic customer service!****** this isn't even the 1st time it's actually the 2nd time of such unauthorised behavior as well as pathetic service to me!