The Mail Preference Service division of the Direct Marketing Association (known as DMA) compiles a list of people who do not want junk mail. This list is provided to any company who requests it, usually magazines.
Write Mail Preference Service and request your name, address, and phone number be deleted from all mailing and marketing lists. Provide them with three spellings or variations of your name, as well as with any other names at your address (including previous occupants). They will retain your information for five years. At that time you should write again. Be sure to write when you move. Send your name and address. Be sure to sign and date your letter.
Mail Preference Service
c/o Direct Marketing Association
PO Box 9008
Farmingdale, NY 11735-9008
212.768-7277
if you are in UK
or
… in US