Imagine Customer Service as the Early Space Program.
You have Astronauts and you have Monkeys.
Astronauts have problem solving skills that can ultimately sink or swim a mission. They hear orders from mission control but can offer suggestions or even take direct action based on spacecraft feedback if necessary for overall success. They're the guys you send to the moon and back to get moon rocks.
Monkeys see a red light on a console initiated from mission control, which corresponds with pressing a red button on the console. If they press the red button when the red light is on, they get a banana. if they press the button when the light is off, or press any other button when not instructed to, they get shocked. This continues with multiple lights corresponding to multiple buttons to get the desired result. In no way does the monkey have any say so in the control of the spacecraft lest he gets shocked.
Most CSR tier 1 centers consists of Monkeys. The keyword to tell is if you hear "I'm sorry" or "Thank you" a lot. They're saying that cause their screen says to say it. Usually a robot like script reading session follows the keywords. the "Shock or Banana" is the Feedback call / Survey you get after calling one of these CSR's. you vote 1 he gets schocked (fired) and if you vote 10 he gets a banana (paycheck)
CSR tier 2's Still have monkeys but a Astronaut may be lurking around somewhere. The Astronaut is going to sound like a normal human being. he may converse with you outside of the issue at hand. he may skip a few steps to get to the actual problem if he feels that he can without causing issues. This is who you dream of as a CSR. A human with real problem solving skills.
Tier 3 Consists of mostly astronauts. Getting here takes some time but it's your best bet to get your issue resolved.
Just Remember that you have to go through the Zoo first before you can get to NASA.