Purchased art and paid up front for the piece on a...

Purchased art and paid up front for the piece on a cruise ship. Art was suppose to be delivered between 8 to 12 weeks. It has now been 16 weeks and the gallery is claiming that the art has not been received from the artist. Why would you auction and sale pieces you do not have in stock? This should have at least been explained when the art was being auctioned off. When called the first time to check on the status of the artwork was told it was being prepared for framing. When I called the second time I was told a different story. I do not think it is fair that you have to pay for something in advance if it is not ready to be sent to you. Maybe a commissioned piece of art from the artist directly? I would not trust this company. They change their story every time you call customer service and are not truthful. Buyers Beware!