I think I found them. They're a broker that sells businesses.

Here is their site: http://www.nbcsllc.com/
According to the Better Business Bureau, they operate under the following names:
- National Business Capital Services
- Great Western Business Services, Inc.
- GWBS
- NBCS

I copied the following fom the better business bureau site.....

BBB issues Reliability Reports on all businesses, whether or not they are BBB accredited. If a business is a BBB Accredited Business, it is stated in this report  BBB Definition:

report - A summary of activity reflected in a company's BBB file. Includes basic business background, BBB Accreditation information, and BBB complaint activity over the previous three years. Also reports may include any known government actions, advertising issues or other information that results from activity conducted by the BBB.
.
Name: National Business Capital Services
Phone: (972) 980-9969
Fax: (972) 980-0187
Address: 1840 Hutton Dr STE 100
Bld. 1
Carrollton, TX 75006-6647
Website: www.nbcsllc.com
Original Business Start Date: May 1983
Principal: Mr. Strick Hullender
Customer Contact: Mr. Strick Hullender - (972) 980-9969
TOB Classification: Business Services (General), Financial Services
BBB Accreditation: This organization is not a BBB Accredited business.


Additional DBA Names

Great Western Business Services, Inc.
GWBS
NBCS


Nature Of Business

For an upfront fee, this company offers: advertising services and business plans to business owners who want to sell their business; and, valuation services to business owners who want an opinion about the fair market value of their business. Specifically, this company places generic ads in various publications and Internet media offering businesses for sale. The company states that potential buyers who respond to the company's ads will be matched with businesses for sale that meet the buyers criteria. Valu-Edge Consulting LLC prepares the valuation service and business plans for this company.


Customer Experience

The Bureau has received complaints regarding independent consultants misrepresenting the availability of potential buyers, and dissatisfaction with the company's performance. The company resolves complaints by various ways, including: providing additional benefits, explaining its policies, and making requested refunds when appropriate. The company points out that it cannot guarantee that a business will sell or a buyer will be located for any particular type of business.

When considering complaint information, please take into account the company's size and volume of transactions, and understand that the nature of complaints and a firm's responses to them are often more important than the number of complaints.

The BBB processed a total of 13 complaints about this company in the last 36 months, our standard reporting period. Of the total of 13 complaints closed in 36 months, 8 were closed in the last year.

Called want to know if we wanted to sell our business? What the heck....
Who are these people

identified themselves as National Business Service