Everything you download is likely to be copyrighted, from this post, to almost every web page you visit, including the one from your ISP.

Ask your ISP:

"You said that I'm not allowed to download copyrighted material."

"Why are you prohibiting me from downloading and viewing your copyrighted support web pages and almost all other web pages on the internet?"

"How are you montioring the activity of my connection to determine what I'm doing? Do you collect, sell or disclose information about which web sites I visit or which friends I send family pictures or any other type of file to anyone?"

"I consider it a major privacy violation for you to monitor what I'm sending and receiving over my connection. How do I opt out of this?"

Regrettably, it seems they failed to distinguish between allowed use of copyrighted materials, fair use of copyrighted materials, civil copyright-infringing and criminal breach of copyright.

Don't actually ask them. It'd be inviting trouble you don't need.