I have complained to the FCC every time I get these faxes. That is the best way to stop these solicitations. All faxes must comply with what is called an EBR, basically, at some time you have agreed to accept their solicitations by fax and the faxes must include the company name. Also, as an fyi, if you have responded either by e-mail- an 800# or fax and you recieve another solicitation, you can request a $500.00 reimbursement from the offending company. If you go to the FCC website, it will give you all the info you need.
It is a waste of time trying to report them. I have reported them 14 times to the FCC and it does no good. The FCC is way too busy with important things then to bother with unsolicited faxes. I even tried sending them 50 pages of all black, but I heard that it does not waste their ink because they get all their faxes in there computers and just delete them. It takes them just a click of the mouse to delete my 50 pages but takes me forever to send them.
A total waste of time trying to get back at these guys. Now, I just rip up the junk faxes and throw them in the trash now. Much less aggravation. Time to move on!