Nu Sash Windows, Doors and Siding out of Indianapolis, IN. http://www.nusash.net (warning, the website looks like a throwback to 1992!)

They have a customer service number 1-800-622-4904 that I called to be removed from their call list.  Unfortunately they didn't have an option for being removed from the call list, so I picked the option that sounded most likely (Advertising), although that landed me with an Accounts Payable person, who I left a message for.  :)  I'm sure if you called during 8am and 5pm ET, you'd have better luck with a human.

I'm on the DNC Registry and this is my business line, but I guess they feel they can call me because I also do Real Estate Investing on my "free time".

Also, they claim to be a member of the BBB of Central Indiana.