Big companies will not purse $192. Ignore the letter and they'll right it off.
Oh yes they will! Especially if all the facts are on their side. I worked in a corporate legal department and we did that kind of stuff all the time. If the facts are sketchy, then maybe it wouldn't be worth it, but if the case is rock solid, a big company would pay anything to get paid just based on principle. The word can't get out that the company won't chase down money it is owed. Bad for business.