Should sites be allowed to link to other sites?
Also, every website has the power to change Google: just put the noindex tag on your pages and you'll effectively prevent links from Google to your website.
For facebook, it's trickier. One thing that might work is sharing something from your website on Facebook and then reporting it as against community standards. It seems like there are a zillion pages of people trying to get their sites UNblocked from Facebook- the cause of which frequently seems to be people flagging content.