As someone who worked in support as a youngling:

If you behave unpleasant enough I'll go out of my way to make sure your behavior does not pay off. I will note your abrasive behavior in the ticket or might even mark your mail as spam. On telephone our line will suddenly experience technical difficulties. And throughout I will remain as friendly and patient as ever.

I will warn superiors about you, so once you escalate they already have a colorful 3D image of your wonderful personality in mind. Whether that 100% is in your favor, you can guess.

Play asshole games? Win asshole prices.

Behave like a decent person with empathy instead, press the right buttons and I might even skip some of the company rules for you. Many people in support do not give a single damn if they lose their job over you and you might just be worth it.

These are not sfter-the-fact shower thoughts, these are actually lived experiences from the trenches and I know how other people in those roles think.

Persistence pays off, being an asshole not so much