[asianthree]

Coupon is not the issue…
But why would a manager shout at a customer in the middle of the dining room? Get away with it.

Once the person (manager?) followed the customer out of the building, a phone call to Sheriffs department would be warranted. Can’t believe not one person pulled out a cell to video the entire thing.

OP once you contacted the restaurant group, have there been any explanation of the bizarre behavior. The threat of Violence, should have been dealt with immediately with proper authorities, especially if witnesses were available

That said, I never would stop going to a restaurant, unless I personally had an issue.