If you have an angry coworker, you need to try and just ignore them and talk to your supervisor about them. If you have an angry customer, you need to give them what they want.
You tell him or her to deal with it, cuz you ain't changin!
Hiring that coworker
Report it to your boss but tell the boss you want to remain anonymous.
Visit www.bullyonline.org and see if they are a (serial) bully would be a good start. Even if they are not, it will give you some good tips on how to deal with this person.
If they broke a policy, you need to give them a warning. If they break the policy again, you can fire them.
My coworker got promoted before I did.
The cast of Out of Order - 2010 includes: Sarah Bassill as Coworker 5 Bryan Breau as Coworker 1 Tim Eident as Coworker 4 Colby Hanik as Coworker 2 Alberto Mendoza as Coworker 3 Valerie Polhaus as Coworker 6 Natalia Proscinski as Woman
acuse of favor my wife coworker