Nedbank credit card

I have a credit card with Nedbank for some time now, and due to my commitments i then handed my account to debt review (Zeeva) who themselves have not been doing a very good job, and now all of sudden nedbank debits R2500 from my account for the credit card and no body bothered to tell me about this and their excuse was that they do not have my numbers but i bank with them and yet they claim not to have my numbers, and when i request a reversal on this i was sent an sms to contact nedbank regarding this but the excuse for not contacting me regarding payments is coz they dont have my number but at the same time they are able to send me sms's when they feel like they want to.