Unacceptable

So I showed up June 13th, brought my 94 Chevy diesel with receipts adding up to 3k of work done, mind you the truck still needed work... His offer, 1.5k trade in, on a vehicle. I call him the Monday week after, he stated his offer still would stand like it did the week before, but he has a guy coming buying this specific truck cash and he would much rather have the cash, understandable. So I show up at 4:30 because the guy supposedly coming with cash is to show at 5. I'm with my son waiting on this guy to no show, and what do you know he doesn't show. So I ask Justin what now since the guy hasn't showed, now the offer is 1k , 500 in cash because of the leak, again it's a diesel with 3k alone in receipts, . So at the end of the story utterly disappointed beyond everything, it's hot outside, my 3 yr old is cranky and a car salesman who can't hold to his word, and wants the title, cash, and the truck note of 4k paid in a year. Will not go back., all this over a Chevy silverado 2000 year model 179000 miles.... Guy was going to get his money either way, greed took over.