1. This is the wrong section to be posting this in, but at least you took the time to post it.
2. You should not have dealt with this user. Look at his trust rating, dig into who exactly you're buying something from. If you don't spend the time to look into this person or if you don't spend the time trying to make sure your deal is safe with an escrow, I don't think you should be trading on this marketplaces yet. You need to be more careful because scammers mooch off people who fall for their antics like you and you end up losing a lot of what you worked hard for.