Exhibit 3.1.13

CERTIFICATE OF INCORPORATION

OF

NCO FUNDING, INC.

The undersigned, in order to form a corporation under and pursuant to the provisions of the General Corporation Law of the State of Delaware, does hereby certify as follows:

FIRST: The name of the corporation is: NCO Funding, Inc.

SECOND: The address of the corporation’s registered office in the State of Delaware is: 300 Delaware Avenue Suite 1704, Wilmington, Delaware 19801, and the name of its registered agent at such address is: NCO Funding, Inc.

THIRD: The purpose of the corporation is confined to the maintenance and management of the corporation’s intangible investments and the collection and distribution of the income from such investments or from tangible property physically located outside the State of Delaware; provided, however, that the corporation shall not engage in any activity contrary to Section 1902(b)(8) of Title 30 of the Delaware Code, as the same exists or may hereafter be amended from time to time. For purposes of this Article, “intangible investments” shall include, without limitation, investments in stocks, bonds, notes and other debt obligations (including debt obligations of affiliated corporations), patents, patent applications, trademarks, trademark applications, trade names, copyrights and similar types of intangible assets.

FOURTH: The total number of shares of stock which the corporation shall have authority to issue is 1,000 shares of common stock having a par value of $1.00 per share.

FIFTH: The name and mailing address of the incorporator is as follows:

Name |  | Address
A. David Vande Poele |  | 222 Delaware Avenue, 17th Floor Wilmington, Delaware 19801

SIXTH: In furtherance and not in limitation of the powers conferred by the laws of the State of Delaware, the Board of Directors of the corporation is expressly authorized and empowered to make, alter or repeal the bylaws of the corporation, subject to the power of the stockholders of the corporation to alter or repeal any bylaw made by the board of directors.

SEVENTH: The corporation reserves the right at any time and from time to time to amend, alter, change or repeal any provisions contained in this Certificate of Incorporation, and other provisions authorized by the laws of the State of Delaware at the time in force may be added or inserted, in the manner now or hereafter prescribed by law; and all rights, preferences and privileges of whatsoever nature conferred upon stockholders, directors or any other persons whomsoever by and pursuant to this Certificate of Incorporation in its present form or as hereafter amended are granted subject to the right reserved in this Article.

EIGHTH: The election of directors need not be by written ballot, unless the bylaws of the corporation shall so provide.

NINTH: To the fullest extent permitted by the Delaware General Corporation Law as the same exists or may hereafter be amended, a director of this corporation shall not be liable to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, provided that this Article shall not eliminate or limit the liability of a director for (i) any breach of the director’s duty of loyalty to the corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law or (iv) for any transaction from which the director derived an improper personal benefit.

IN WITNESS WHEREOF, the undersigned has caused this Certificate of Incorporation to be executed this 29th day of August, 1996.

/s/ A. David Vande Poele |  |
A. David Vande Poele, Incorporator |  |

CERTIFICATE OF CHANGE

OF REGISTERED AGENT AND/OR REGISTERED OFFICE

OF

NCO FUNDING, INC.

(Pursuant to Section 133 of the Delaware General Corporation Law)

FIRST: The Board of Directors of NCO Funding, Inc., a Delaware Corporation, on this 26th day of May, 2005, do hereby resolve and order that the location of the Registered Office of this Corporation within this State be, and the same hereby is changed to 1201 Market Street, Suite 800, Wilmington, Delaware 19801 County of New Castle.

SECOND: The name of the Registered Agent therein and in charge thereof upon whom process against this Corporation may be served is hereby changed to NCO Funding, Inc.

THIRD: The Corporation does hereby certify that the foregoing is a true copy of the resolution adopted by the Board of Directors at a meeting held as herein stated.

IN WITNESS WHEREOF, said Corporation has caused this certificate to be signed by an authorized officer, the 26th day of May, 2005.

By: |  | /s/ Gail Susan Ball |  |
Name: |  | Gail Ball |  |
Title: |  | Vice President and Treasurer |  |