Hopefully you can deal with disrespectful callers at your own discretion. I used to tell them curtly that I couldn't help them until they calmed down and then hung up. Getting harassed wasn't in my job description! Usually people called back and would say more calmly "Sorry, I'm not mad at you, I'm mad at the situation, etc etc."

One guy used to call and be rude to all the women I worked with -- only the women. It's like he enjoyed belittling us. At some point he had made every female in my office cry. I got to the point where if he called me, I transferred him to a male immediately and diffused the situation.

Later that year the boss called him up and terminated the business. He wasn't worth the trouble. If only it always worked out that way!