I can't say if you got ripped off or not, BUT I do know that a pure Sativa high is much different than a Indica/sativa mix high.
If your Cannabis experience has been mostly "street weed" then you are used to a Indica 60/Sativa 40 blend which has more of a "body stone" i.e.you are focused on how you "feel". BUT, if you merrily happen upon a bowl of pure Sativa ,you will "feel" a lot different,and you may not even recognize that you ARE stoned.. I prefer the Sativa high myself,I think it leads to creativity..:smokin: