Now I understand there are customers and simply stupid/rude people out there, including in the workplace, but sometimes it's best too endure and let go, especially when the person is leaving. I won't vote YDI cause humans are toxic, but you need to be more mindful when on the job.

When you don't know how to properly bitch... you don't.

cant say YDI since many people, myself included are simply not meant for Customer Sevice. but you should find a new field of work. learn to keep your mouth shut on the job. bad as it sounds, most companies pick customer over cashier every time (kind of how they make money). you work for a paycheck not fun, get your money then complain. I handle furniture for billionaire PoS day in day out, like actual morale scumbags. never trash talk a customer to them or your work, doesn't end well.