Why do the grocery baggers not care?

We provide our own HEB bags and have one for frozen and cold food. Every time we go to HEB the person bagging the food does a shitty job. They never zip the cold bag and they put the strawberries/bananas at the bottom and place heavier things on top. Like WTF. Many times the cashier doesn't even say hello as he/she is too busy talking about stupid shit with the bagger. Several times my wife will get the bags out in front of them to reorganize the food in front of them hoping they would be embarrassed by their shitty job but nope, they don't care. We do self checkout if it's just a few items but this time we had a lot of groceries.