Please don't be that person. Don't take it out on the CSRs. They're low level employees who have to follow company policy. The way to their hearts is not through complaining and making demands. Be nice and treat them like humans.
Here, have a story from my life as a service desk employee for an Apple dealership.
Note that he's betrayed his true motive. He doesn't actually expect a new computer, he's just trying to extract free stuff from a business that he didn't even buy his product from.
The problem here, as in my example, is customer expectations. Apparently people will buy high end Apple laptops with dual video cards, etc, and then be surprised that they get warm when you fire up Final Cut Pro. Then they go online, find a handful of other people who feel the same way, and convince themselves that it's some kind of widespread design flaw and that they all deserve to be given something. When their forum thread of righteous indignation fails to attract Steve Jobs to personally deliver an engraved apology to their doorstep, they come out to local retail and repair shops and take it out on guys like me, leading us to binge drinking and depression.
It's a smartphone, guys. It's normal to only get a workday's worth of life out of the battery. You probably knew that before you bought it. It's not a disgrace, and verizon doesn't owe you anything for it. Just buy the extended battery and be glad it's not an iPhone where you don't even have that option.