boycott
That sounds like you are referring to a "boycott".
Is to Boycott.
Glad you asked it is Boycott ♥♥♥♥
Boycott.
BoyCott, Would be the world.
That's called an 'embargo'.
Boycott
... holding them in contempt.
Anyone can refuse to give service.
The House may refuse to seat a member elect by majority vote
It is illegal to refuse emergency medical service, even if the person is an illegal immigrant