This is almost certainly a debt collection scam.   Do not pay them anything.
Strong possibility that anyone claiming to collect for Greenwood Holdings LLC in New York, New York is engaging in some sort of debt scamming.
See this:
Washington State Department of Financial Institutions says this about Greenwood Holdings LLC.

Greenwood Holdings LLC is not licensed by DFI. This entity is not registered to conduct business in Washington State by the Department of Licensing, the Department of Revenue, or the Secretary of State. Washington residents are advised that state law provides in RCW 31.45.105(1)(d) and (3) that a small loan made by an unlicensed entity to a person physically located in Washington is uncollectible and unenforceable in Washington state.

Greenwood Holdings LLC has the following contact information:

Greenwood Holdings LLC
PO Box 4668
New York, NY 10163-4668
(855) 871-9317
Fax: (888) 839-2021
Email: [email protected]

Greenwood Holdings Group, LLC
4 Solomon’s Arcade
Charleston, Nevis West Indies
_______________________________
See also: http://www.online-payday-loans.org/contact-info/greenwood-holding-group/
_________________________________
NYS Department of State
Division of Corporations
Entity Information
The information contained in this database is current through July 6, 2015.
Selected Entity Name: GREENWOOD HOLDINGS LLC
Selected Entity Status Information
Current Entity Name:    GREENWOOD HOLDINGS LLC
DOS ID #:    3380354
Initial DOS Filing Date:    JUNE 23, 2006
County:    KINGS
Jurisdiction:    NEW YORK
Entity Type:    DOMESTIC LIMITED LIABILITY COMPANY
Current Entity Status:    ACTIVE
Selected Entity Address Information
DOS Process (Address to which DOS will mail process if accepted on behalf of the entity)
GREENWOOD HOLDINGS LLC
694 MYRTLE AVE
SUITE #145
BROOKLYN, NEW YORK, 11205
Registered Agent
NONE

_________________________________

NYS Department of State
Division of Corporations
Entity Information
The information contained in this database is current through July 6, 2015.
Selected Entity Name: GREENWOOD HOLDINGS 2 LLC
Selected Entity Status Information
Current Entity Name:    GREENWOOD HOLDINGS 2 LLC
DOS ID #:    3512842
Initial DOS Filing Date:    MAY 04, 2007
County:    KINGS
Jurisdiction:    NEW YORK
Entity Type:    DOMESTIC LIMITED LIABILITY COMPANY
Current Entity Status:    ACTIVE
Selected Entity Address Information
DOS Process (Address to which DOS will mail process if accepted on behalf of the entity)
GREENWOOD HOLDINGS 2 LLC
694 MYRTLE AVE
SUITE 145
BROOKLYN, NEW YORK, 11205
Registered Agent
NONE
_______________________
And there’s this:

An entry dated 10-8-2012 on 800notes (855-595-0178) says this:

CWB Services, LLC.  (Cutter Group)
2114 Central Avenue
Kansas City, MO 64110

Additional Business Names Related to CWB Services:
Basseterre
Anasazi Group / Anasazi Services
Clearwater Bay Marketing
CP Investors, LLC
Cutter Group LLC AKA Longboat/Cutter Group
Greenwood Holding Group, LLC.
Insight Capital
Mass Street Group
Namakan Capital
National Recovery Service
Quick Cash / QuickCash.com
Sandpoint Capital LLC
Shoreline Online, LLC
St. Armands Services, LLC
Triple Services, LLC
Twin Bluffs
Vandelier Group, LLC.
Also see:
https://www.ftc.gov/enforcement/cases-proceedings/132-3184/cwb-services-llc
Federal Trade Commission, Plaintiff, v. CWB Services, LLC, a Missouri limited liability company; Orion Services, LLC, a Kansas limited liability company; Sandpoint Capital, LLC, a Nevis limited liability company; Sandpoint, LLC, a Delaware limited liability company; Basseterre Capital, LLC, a Nevis limited liability company; Basseterre Capital, LLC, a Delaware limited liability company; Namakan Capital, LLC, a Nevis limited liability company; Namakan Capital, LLC, a Delaware limited liability company; Vandelier Group LLC, a Delaware limited liability company; St. Armands Group LLC, a Delaware limited liability company; Anasazi Group LLC, a Delaware limited liability company; Anasazi Services LLC, a Missouri limited liability company; Longboat Group LLC, also doing business as Cutter Group, a Delaware limited liability company; Oread Group LLC, also doing business as Mass Street Group, a Delaware limited liability company; Timothy A. Coppinger, individually and as a principal of one or more of the Corporate Defendants; and Frampton T. Rowland, III, individually and as a principal of one or more of the Corporate Defendants, Defendants

Note that Cutter Group is listed as a Defendant