Cell C has listed me on arrears misrepresently

I had an account with Cell C that I disputed and paid off, now I am being told of another account and I have said I do not know about the account but they still listed me as a bad payer, I cant even afford a house but I am told I have to pay R6000-00 for an account I don't know about.<br> <br> Talk about irresponsible billing and **** contracts just to cash on unsuspecting us.