I learned to keep my head in the face of VERY upset respondents. It can be very dull most days, just dialing numbers and reading a script. As far as workplace culture, I never payed attention to that. I just sat at my desk, got to work, and then left at the end of my shift. I would hear my coworkers chatting between calls, bemoaning their misfortunes and such. The hardest part about the job is dealing with the frustration of rejection after rejection through no fault of your own, but knowing that you won't get any bonus that pay period because of it.
The most enjoyable part of the job is that when you get used to the script, you are allowed to read a book, do a crossword puzzle, draw, etc. Pretty much anything that you can drop at a second's notice to give a survey, should the respondent pick up.