Is that right? I could have told you that. I worked as a call center rep about 10 years ago, so I sympathize with everyone who works as one. Many people feel talking on the phone is an anonymous task, they feel it can be an opportunity to be  discourteous, rude, and downright nasty to the person on the other end. Patience and restraint are the MOST desired attributes in the job. You need both when you get calls from people who are calling you every name but a child of God.

Call-Center Workers Far More Patient Than Callers: Study.