You can't stop that, but you can use some softwares to 'block' your data, so they can't see what you're downloading etc.

Who is hadopi? Is that your ISP or something? Have a look at something like Tor (https://www.torproject.org/). I never tried them but might be what you need.

The French HADOPI law or Creation and Internet law (French: Haute Autorité pour la diffusion des œuvres et la protection des droits sur internet,[1] "law promoting the distribution and protection of creative works on the internet") was introduced during 2009, providing what is known as a graduated response as a means to encourage compliance with copyright laws. HADOPI is the acronym of the government agency created to administer it.

Source: Wiki.

I think is best to wait 3 or 4 months befor doing anythink, what they said was just a warning that my IP is in their watchdog list after a few months ill change IP and provider under my wifes name.

They are nasty you can be fined €1000 up to €30000 its best not to mess with them.

€30000

€30000

You pay this whene you no more fery puder left in your pockets

Watchdog list? Man what were you downloading :P If your Gov is serious about that stuff then I' ll just lay low or stop it all together.