I think you should demand a refund. And if he refuses, contact your credit card company or whatever you used to pay, submit a complaint, stop the payment, etc. You paid for goods/services that he failed to provide. He needs to refund your money at the very least. You need to out this breeder, as the whole situation sounds fraudulent. I would NOT under any circumstances agree to another snake from him, particularly not waiting for one. There is NO guarantee that he could provide you the snake you want, and the likelihood that you would ever see that snake? Slim to none. Do yourself a favor and get your money back, then go find a reputable breeder to get your snake from.
And please let us know who this guys is. I don't want to find myself in the same situation with this guy. =/
Edit: To be honest, your snake probably never existed. That's what it sounds like to me anyways.