Frito-Lay review: Pointless to have a rep who just puts the product on the shelf?

I find it very pointless to have to wait for a rep to put products on the shelf it makes no sense to me. I use to work at a place where the driver would not only drop off the products but put the products out. Now this place I work at not only have a delivery guy who drops off the product but then I have to wait all day for a rep to come in and then put the products out. The reps are not only very rude but they just throw the chips all over the floor when I have customers in watching this and on their phones shouting about how terrible their life is. I have customers trying to shop at peace listening to all this. This not only costing Frito Lay milllions of dollars to pay for these reps annually but they are pointless. Either have the delivery person put it out or have the employee of the shop put it out. Why is there even a middle man in all of this?