RCS-Edgars Accounts leaves my credit record in poor condition

The Edgards accounts are now being managed by RCS and my credit record is in poor condition because the edgarsrcs team refuses to send me paid up letter sighting that they owe me money and they must first pay it back. All documentation has been produced for them to do so then can close my account and issue me with a paid up letter but they have since gone silent. I've been sending email after email to them