There wasn't one specific moment, more like each little thing that built up to just not giving a fuck anymore.

I worked retail back in high school, did 9-11 hour shifts each day of the weekend (changed regularly, but it was something like 10am-9pm and 9am-6pm). Every shift they would ask me to stick around after close (for up to an hour) to clean up without overtime.

Then I had a customer come in. He bought something final sale from me (I remembered helping him, it was an RC Car) and tried to return it the next week for some stupid reason (like "it didn't come with batteries").

I told him that the item was final sale, as I told him when he bought it. He raised a ruckus, and my manager basically told me to process the return and how it was my fault for not manually entering the return policy into our POS POS so it would show up on the receipt (why wouldn't it automatically add the store policy which never changed and we had to manually input on each receipt?).

Another one, my manager and the two other guys who worked the same days as me all spoke Urdu and I do not. I was essentially ostracized from their group chats (where they discussed important business-related details), and then I got in trouble for not knowing about what they'd discussed.

Finally the district manager was a cock and when my manager cut all my hours (for no discernable reason. I had the best sales on my team at the time), I called up the DM and he said he'd look into it. After a week and a half with no response I called back and the DM was now on vacation and wouldn't be back for another two weeks.

When he returned, the DM said I'd be transferred to a location that needed me. Again, because high school, I told him I couldn't make it to that location by transit (~2 hours by bus from my place, my city's transit system was awful), so he told me they wouldn't need me anymore.

I guess all the stuff with the DM was actually after I'd given up on being a good employee, but shit, way to treat your people.