Being a total newb - im not sure what Escrow is or how to tell if I used it. I presume its some kind of middleman who holds the funds for both parties until buyer is happy - then releases. Which would be a great idea if I had known there were these kinds of services out there.

I purchased the bitcoins through a vendor on localbitcoins.com, who have always been extremely good. I transfered the payment to samsungstore from my balance on localbitcoins.com which keeps a virtual wallet for you.

Could I approach them for help? Or try and insist they investigate? Or do i not really have a leg to stand on?