Thanks for the info Cathy. I called the 1800 # and a USPS representative told me in order to complain or make sure I stopped receiving mail from the company to call them directly, or to write a letter to :
Mail Preference Service Direct Marking Association
PO Box 643
Harmel, NY 10512
But other than contacting the company directly, she claimed it was not guarunteed to work.
The 800# for the company required I speak with a representative who patched me through to a voicemail box that requested I pronounce the name, address, and zip code of my residence clearly to be removed. It seems like a scam that a representative would patch me through to a voicemailbox.