Whoa!!
Have you poked around
Junkbusters Home Page ???
I have used something in the past that guarantees you to get pesky mailing list.
Years ago people complained about pornographic mailings, and Congress set up a law so that recipients of unwanted pornographic material could have their named removed from mailing lists and any further mailing would be unlawful, making them subject to fines or jail time. Well, for some reason, a challenge to the law ended up in Supreme Court. So the court said that whether something is pornographic or not is in the eye of the beholder, so if you deem a credit card application to be pornographic, then so be it. So the law stands.
So if you get junk mail from a certain place and you can't get it stopped, fill out a prohibitory order from the Post Office and it will make it unlawful for them to send anything else to your address. But if you get any further mailings, what you do is send those mailing to the post office referencing the original Prohibitory Order and they go after them with postal inspectors and the law.
Note that I was very disappointed to find out that I couldn't use Prohibitory Orders to stop those pesky mailings from the IRS.
Here's a snippet from Junkbusters about it...
A U.S. Federal law gives you the power to stop any non-governmental organization from sending you further mail. You can download a copy or Form 1500 or ask for a copy to be mailed to you by telephoning a major Post Office in your area. Fill it out (it's very short), attach it to one of their opened letters, and lodge it at any Post Office. The form was originally intended to stop pornographic junk mail, but the Supreme Court of the United States has affirmed your right to stop any mail that you don't want. If the company continues to send you mail or sell your name they risk being prosecuted as criminals. Burnett comments that with this move ``name removal is virtually assured.'' (They will still store your name in their databases, but they are unlikely to continue renting it.)
Check out...
Prohibitory Order - Wikipedia, the free encyclopedia
http://www.usps.com/forms/_pdf/ps1500.pdf