There's a right way and a wrong way to do things. If you get spoiled milk at the grocery store, you don't stand in the parking lot, complain to other customers and expect to get results. I suppose the store manager might wander out there to find out what the commotion is all about but, most likely, he won't. But, if you go to him and say "Hey, this milk is spoiled and the date on the just says 2 weeks from now!", he'll address your problem.