upvote

In a way, the poor service saved you from embarrassing yourself. Nobody wants to be vented on - Not coworkers, not family, not friends. People at work will usually listen to suggestions for improvement if you state them positively and not as demands or venting. That could help everyone a lot more than just venting. Or if you were trying to speak to a psychologist or mental health counselor, it would be better to talk about ways to handle frustration than to just vent about a subject they know nothing about.