Problem With Fastcoin.com Order.

I guess this is the right forum for this. If not, please move it where appropriate.

Anyway, to start at the beginning, I first heard about the site "www.fastcoin.com" from a topic here on CCF. A couple users pointed out it was run by well-established and highly respected dealer Joel Rettew, so I decided to give it a look, and was pleased to find they had some quality inventory at reasonable prices (namely a very nice selection of capped bust halves). I ended up purchasing 2 raw VF Capped Bust half dollars (1826 and 1831), and a PCGS MS-63 1900-P Morgan dollar.

After about a week, I received a package that contained 3 coins. Only 2 were ones that I had ordered. Both the 1826 CBH and 1900P Morgan were exactly the coins I ordered and I was pleased with both of them. The third coin was indeed a 1831 CBH, but it was clearly not the one I had paid for, being several grades lower than the one I had purchased.

Being understandably confused about this, I went back to their site to try and find out what might have gone wrong. I soon discovered that I had received the coin listed directly next in their catalogue to the one I had actually purchased. In addition to this, the one I had received was being sold for $100, as opposed to the $135 I had paid.

Now I can understand how little mistakes like that can happen, so I wasn't too upset. I contacted the website explaining what had happened, and received a prompt reply acknowledging their error and that they would send me a return label for the erroneously sent coin as soon as possible, after the return of which I would be sent the proper coin.

One week after that, I still hadn't received the return label they said that they'd send me. I received another e-mail from them asking if I had received it yet, and if not, that they would send another. I replied that I had not yet received their return label, and I have not heard back from them since. That was 2 weeks ago. I sent another e-mail last Friday morning inquiring what the hold-up might be, but like before, still no reply.

I went back to their site a few days ago to discover it has been completely reformatted, and the inventory completely overhauled; everything was changed. Most discomforting though, was that when I tried to log in, it said that my e-mail was not in their database; my account (and presumably my order info as well) has simply disappeared from their website! I'll give them the benefit of a doubt that this might have been due to complications from the site overhaul, though.

So I'm at a loss for what to do now. I'd still like, if at all possible, to get the coin I paid for, or a refund if that cannot be done. What are my options?