It's one of two companies, either US Fidelis or Auto One Warranty. They've been under a lot of heat lately for their practices. They actually called the Indiana Attorney General TWICE, so now he has them in his sights. Anyway, call them back and give them a piece of your mind. They can be reached at 949-475-9500 or 800-499-5711 or 800-499-4116. Their websites are www.usfidelis.com (which claims they don't call numbers on the DNC list, yeah right), and http://autoonewarranty.com.
You can also keep up to date on the on-going saga regarding these douchebags at http://www.reddit.com/r/reddit.com/comments/8i1u7/want_the_phone_number_to_the_your_cars_warranty/ (cut and paste).
You can also register a complaint with your state's Attorney General or the FCC.