National Settlement Services, Settlement Corporation demanding payment for undocumented/unproven deposit to account last year Seattle Washington

Was approached via e-mail by company called National Settlement Services, or Settlement Corporation, insisting repayment of fast cash loan alledgedly deposited on 01/16/2012. May have meant 2013...not sure. Verified with bank no deposit made in 2012, and no correlating deposit made in 2013. Company repeatedly sent e-mails asking for payment via FAX. Replied to company numerous times aking for original lenders' name...no response until 4th or 5th message. Message stated that upon first payment received, original lender names would be available. Messages were never signed, no names from company given. Terrible grammar from company messages also. Document attachments also had no names, and signature illegible. Told phony company contact with original lenders plus State Attorney Generals office was under way. Was then warned by said company not to correspond with any previous lenders. Have all necessary documentation/statements ready in case company was legitimate. Through research found others who have been scammed or harrassed by same corporation. Now proceeding with forwarding to Atty. Gen's Office.