Re: Alaskabat, Where is my stuff?
From my perspective as a some times retailer and full time customer service provider.
If you have the mans number then for gods sake call him. I know you may be reluctant to speak to him because you are upset and don't want to start screaming if the conversation does not go your way, $600 is a lot of money. But at this point you need to make that call. That right there might clear it up. There are any number of reasons why you have not have received your purchases, and a few of them are legitimate, you may just get your guitar and a partial refund to make up for the bad service (thats what I would do were I in his shoes). If nothing else you let the other party know you are not going to sit passively on your ass while you are taken advantage of.
That said, it should have been shipped out to you within a week if you paid for it. What method did you pay with? A Google wallet? File a claim, though by waiting two months you very well could have exceeded the time frame for contesting a transaction. I never would have waited as long as you have, consider this a lesson for the future.
And seeing as how the transaction was initiated here at jemsite, and the seller is not responding to the established form of communication used to conduct the sale and arrange payment, attempting to contact AB through here does not seem like an unreasonable attempt at rectifying the situation. His only other recourse is legal, and at this point he really has no obligation to try bend over backwards to contact the seller. His obligations appear to have been met (assuming he really did pay AB for the items), and now it is time for fulfillment of his portion of the transaction to be reciprocated. Better a notice bulletin tacked to a tree than an arrest warrant for fraud right guys?
Good luck, I hope it works out well for all involved.