First of all, stop swearing everypony. There are youngsters on this site and it doesn't make anybody 20% cooler or awesome.
This is something that I never seen anywhere else that ever happened. You should really report this guy. He refused to sell you a toy when you had every right in the world to buy it. And also you know how strict the world is becoming over harsh language such as the word "faggot". This is one of the main things to get this cowards behind in trouble. That is offense to a individual that he doesn't know. What if you were homosexual? You should try spreading this story to all the other pony sites and forums such as Equestria Daily. I am not sure how to but I would really recommend you doing this.