credit card

I had a credit card with nedbank and I paid it and now nedbank tells me that my credit card account is handed over to a company called select online...the part that I don't understand is that my account was paid on the 8th of December and they handed my account to select online on the 13th and now this company tells me that I owe them legal fees...and don't want to give me a paid up letter....and whenever I called nedbank recoverys they all gave me a different story and they customer service is not up to standard and nedbank should do something about that...nedbank should improve thr way they train and deal with customers....my ID number ********** 063082 they will pick up my account