Facebook even creates "ghost profiles" for people who don't even sign up for an account, so without you ever giving consent, any interaction you have with those who do have account is logged. The site is a privacy nightmare.
Facebook takes your name, address, phone number and email address from your friends phones using the FB app. Your co-workers too -- you did give HR your 'emergency contact number' right? You can bet those are programmed into a phone contact list so HR can send a group message.
I'm sure you could be jobless and friendless living in a cave, but that's about the only way to avoid it now.
I suggest poisoning the database. Add false contacts to your phone, use one to sign up for store discount cards and fake Gmail/FB accounts. Just one per person is enough to screw up everything they're doing.