I try to be nice to customer support people by default. I've worked half a decade as one and understand that most of the time, they're really just being used as meat shields for the actual people who can do something about my problem. Getting angry at them won't solve the problems faster, it just ruins both of our day.
I just let them go through with their script until we get to the point where they file a support ticket.
The real assholes I have encountered through the phone are the ones from the credit collection agency. My deceased grandmother had unpaid dues in her now-disconnected celphone line that people from the credit collection agency are still going after to this day (and it's not like I can pay them now. They've piled up the charges and now amount to hundreds of thousands.)
One of them even called my mom at her work, I have no idea how they got the number, and it caused a problem for her (she works as a guidance counselor at a public school.)
