On principle, I will not: 

1. Accept a credit card offer, consider a new car insurance or home owner's insurance provider, or change my cable plan if you send me something in the mail.
2. Vote for a particular candidate, donate to your athletic league, or spend a moment taking a quick survey if you call me at home.
3. Buy something from you, listen to your spiel, or even make eye contact with you if you shout at me from your booth in the center aisle of the mall.

Even if you have a great product or service that I'm very interested in, I won't accept your offer on principle.  I don't approve of your scammy tactics and your unwelcome intrusion into my life. 

For the people who accept these offers, vote for these people, and buy these things, realize that you're the problem.  You're legitimizing the practices of these junk mailers, spammers, and harassers.  So, thanks, you buncha jerks. #psychology