To answer the question in the first post. Yes, you can easily find unlisted phone numbers. If you have the physical address of the company, you can get all of the phone numbers attached to that physical address. Its in the Coles Directory. (I am assuming the software company is in the US.)

I did a quick Google search and the only reference to Coles reverse Directory takes you to NetDetective and that's NOT what you want. Go to the library in your local business school or university and look there. You will need a physical address for the company, which should be easy to get because that company did not get a credit card swipe machine or authorization to accept credit cards without giving their merchant service a physical address. The address had to be confirmed before the service was authorized.

If the company is in another state find the local university in the area and call the business school library and sweet talk the person who answers into looking up the phone number for the address.

Also, check out e-Bay and other auction sites. Search completed items for that particular piece of software. The CC number may have been used to purchase a low cost item in order to build up positive feedback. Once the feedback is high enough the user then starts selling and that's where they start making money. This was done with my husband's credit card. Check out "hugovox", "gudolf" and the associated names in the feedback that have also been NARU'd on e-Bay. This group built up feedback and then started offering high end camera equipment that never arrived.

Hope this helps. Good luck.