When you are dealing with a front line person, such as a court clerk, an IRS agent, a bank employee, or anyone who is the person who deals with the public, you should not yell at them.
I KNOW. Yelling feels SO GOOD when you are mad and frustrated.
However, yelling almost NEVER gets you what you want. If fact, many companies allow their employees to hang up on someone who is yelling.
TO GET THE INFORMATION YOU NEED:
Have all the paperwork at hand so you can quickly answer any questions that they ask.
Be friendly. Admit that you may have made a stupid mistake. DO NOT LIE FOR ANY REASON. Ask questions POLITELY.
Sometimes when they say, "Can I help you?", I reply, "You probably can not help me, but here is the probably stupid thing that I need."
BE CERTAIN to write down the time and date of the phone call and the name of the person you talked to. Take notes during the conversation.
LISTEN. Sometimes people who can not help you give you important information about where to go next. BE CERTAIN to write down this advice exactly as given. Ask them to spell it for you, if you are not completely certain of the spelling. Sometimes, all you have to have is the correct wording to look up the solution on Google.
If you can not understand the person, ask them to slow down. If you can not hear them, tell them that you can not hear them.
REMEMBER, the person to whom you are talking did NOT CAUSE YOUR PROBLEM. But they can usually help you solve your problem if you are nice to them.