Just call them back and tell them you don't do any advertising and that you are referral based only. They will ask you the name you do business under and they will remove you from their list.

I am so sick of the unidentified & unsolicited bogus calls from this # and a few unknown #'s, who gives these annoying people our #'s let alone the rights to call & annoy us.  We Are Not INTERESTED In What You are selling or what you have to say...PLEASE STOP CALLING!