You went to a store and they promised pins to you..... But didn't take any info before you left the store, how was that NOT a huge red flag? There are countless stories of people getting screwed over these pins, it is a silly gimmick that nets you (at this point) a choice of 2 different books. Other possible "prizes" to be announced.
Bad Idea has done ZERO for those that have been screwed out of pins by shops. The only thing has been negative press for the shops but that is quickly forgotten about as I cannot name a single one that was involved in a pin fiasco previously.
Pins have a set of stipulations but are not actual enforceable rules as it seems.
Sorry it happened, but on the plus side you have 2 copies of those books now.