That’s a bummer.
You could try contacting the affiliate managers who will take the matter seriously. Also try contacting the hosting company (you can find this in the whois info).
Also, try domain tools. You can buy certain reports quite cheaply which reveal quite a lot, such as reverse IP (who else is hosted at the same IP), plus theres loads more on there.
I dont think you can do anything about the design though.
Unfortunately it seems that theres people who still think that all you have to do is rip off a website to earn a quick buck. They are obviously ignorant to how search works and the damage they can do in the process.