Okay Ozformers I need advice.

Earlier on this year I asked about a good place online to buy TPB's. I got several good answers (thanks guys ) and I settled on Rupps Comics in America as they had what I felt to be fairly reasonable prices and an extensive catalouge. I bought Target: 2006 and DW Generation 1 volume 2. Paid and received in 3 weeks with great communication.

Last month I order Megatron: Origins and Devastation. I got an email to say that the order has been paid on 30/06. It has now been a month and my order has not been shipped and they wont respond to any of the half a dozen emails I've sent.

Can anyone give me any advice on the next step to take or am I screwed out of my money?

As always, thanks for listening.