Manual Pay

I have received an sms informing me that an amount of money has been deducted from my Transactor account.I then called Nedbank to inquire,a consultant said its for my Credit card and she can not help.i have not made any arrangements with anybody to deduct that amount of money.One of the consultant at customer services left me hanging on the line her name is Zinhle. I would like my account to be reserved with immediate effect.There is an ongoing process of the insurance to pay this account so people make their on conclusions.