There is no "law" that covers this. If you want to use their break room, I think they can do this. You can eat elsewhere.

You have no damages. You are entitled to a refund of the value of the meal.

Suing a multi-billion Chinese company is not a DIY project.

This is a Q&A forum. You have not asked a question.

No. And it is not hearsay. That only applies to certain statements in court.

You should start looking for a new job.

Yes and yes...................................................

No damages means no lawsuit. Return it for a refund.

Your father has not "Done everything." In fact, he hasn't done the one thing he should do, which is take legal action.

No attorney can evaluate a claim on line. The only way to know is to pay an attorney their hourly rate for a second opinion.