*****sters

I was checking my credit score via "mycreditcheck" and to my surprise it showed an account in errors was "NIMBLE GROUP" .one I don't even know who they are. Two I have paid off all my creditors, including accounts that were handed over ,"NIMBLE GROUP" have never contacted me at least to tell me who they are and which account are they claiming to be collecting for. I have tried to send them an email to find out who they are and why is't that they in my credit report where else they have never made means to get in touch with me at least. is that even legal.