Amysworld

So I find a site that has content that I need taken down. They dont have permission to use this. Anyhow, I find the contact details and I email a formal DMCA letter.

I receive a letter back saying:
"Hi Amy, we are a hosting company. You'll have to complaint directly to the webmaster, sorry."

I respond with, please give me the contact email for the webmaster to this site.

He responds with:
"Hi Amy, if our customer register the domain with illegal characters, not allowed by ICANN, then the domain is registered with a default data, our company profile.
We cannot provide any information of our clients. Here in Spain there is an strict protection data law. Please tell your lawyer he will have to ask for this info directly to a judge. We cannot provide any personal data without judge authorization."

So what now? If he is the hosting company, isnt he responsible for what is on his server? Can I send a formal complaint to google?