Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.

You have the right to say whatever you want but it doesn't mean that you cannot be held liable ie. sexual harassment, defamation, or talking shit about the damn 5{i3nt0l0gi5t5.

As far as I am concerned if I can't ask them to stop, what can I say to a cold caller?

I'll battle you on the net, I'll battle you in the flesh, I'll battle you over the phone, You can call me collect. I'll battle you for the respect, I'll battle you over a blank check, I'll battle you with a gun to my neck.