Unhappy with Trevor Jaggard

I have been paying my Nedbank Credit card and to my surprise I got a notification from Trevor Jaggard Attorneys stating that my account has been handed to them without my knowledge. The people at Jaggard gave me two numbers one thats an easy pay and the other one is the reference number. I payed R800 in january and they never stated how much I owed, I then payed on the 8th of March thats where I got the message from Jaggard. When I contact Nedbank no one assisted me, so know I am starting to think that this is all a **** to get my money or is it a real deal and I want Jaggard to take accountability and stop wasting my time. I will ensure I get to the bottom of this as soon as possible, that Jaggard shouldn't take me for a fool. I am a woman who keeps my promise and trust if I am unhappy I know people who will assist me.