MMJ America - Denver

I recently came to this dispensary (located on Broadway St. in Boulder, CO). I brought with me the advertisement from the Rooster magazine that stated that for the "Fall Specials" I could purchase up to 5 grams of cannabis and would be matched from the shake up to 5 grams for 5 cents. I drove a total of about an hour to participate in this advertised deal. However, upon arriving I was rudely told by the manager, that this deal would not be honored. I was told that it was a misprint and he tried to coerce me to join as a member instead in order to get the deal, or I could just buy whatever and leave. What kind of business is being ran here? It is completely illegal to advertise falsely in order to bait customers in, and then try to coerce them into signing over their medical rights. I have NEVER had an experience in which I felt more uncomfortable, intimidated, and mistreated. Based on this experience I feel I must make others aware of these illegal practices and let people know, that w