Kinda tough to let this kind of crap go but you have to. Just know Karma will probably get that a hole. I had same thing happen, drove to Seattle (2 plus hours) in my old suburban to buy a Landcruiser hard top. I told the guy exactly when I'd be there. I show up, don't see it anywhere, dude comes out of the house and starts looking around the yard and with some VERY bad acting says "Somebody Stole It"! Ugh!
Karma (nature or what ever you believe in) will always make right. You just may not see it happen, usually you do, then I just try not to laugh, again karma. I just try to live by that anymore. A bit less stressful and a bit less drama.