I just want to second this, it’s totally possible to be upset with the product/service you receive without turning into an avatar of privilege.
I’ve definitely had times when I was VERY annoyed with customer service (hello US medical insurance industry), but any time that happens make it a point to never rise past the level of grumpy or take it out in any way on the actual person I’m talking to. Once even got into a conversation with a support rep about how it was the company and its higher-ups that were making life hard for both of us.
