Item doesn't do what is said to do

Very upset with Groupon and their suppliers for advertising or putting on sale items that they don't really do what they supposed to be doing based on the promotion. I bought a dent puller repair hoping that will be able to repair some of the dent in my car - to my surprise when the item arrived by just looking at it one could tell that it was just waste of time. <br> <br> The damn thing doest work at all, tried everything - the suction it's just useless <br> <br> Groupon needs to really check before putting such nonsense on their website and misleading consumers. According to NCP this is a serious violation. <br> <br> ***<br> Groupon code: ***9Pp