Customer Service: Utility Companies
One of my least favorite things to do is call the cable company or the company that provides my Internet service.
I try not to get short with the person on the line (they're just trying to feed their children). All too often, this takes a good bit of effort -- when you're disconnected three times, meaning you're forced to wade through their electronic gatekeeping three times, and then you get somebody on the line whose command of English rivals my command of Portuguese.
Your experience may vary. But, probably not a hell of a lot.