It must be great to be perfect bsal6160 and never make a mistake.  In the real world sellers make errors on stock, its sold but under the wrong name, it get shoplifted or any number of other legitimate reasons.  In a B&M store if its not on display you can't buy it, but on the the internet stock control is much harder, especially for small new sellers.  Don't immediately assume its fraud it could be an honest mistake, give the seller a chance to sort it out, if they can't or won't then you have the option of opening a dispute.