Walmart store in Benson Arizona Not ordering merchandise I need for everyday living,

I have been to the Walmart in Benson Arizona more times than I can count trying to buy a dozen Great value 1 gallon water and 5 quart container of synthetic motor oil for my car and Lucas oil stabilizer for my car and the store has been without it for 2 months? Now this is the desert people cannot drink water in most parts of the town and you need to buy bottled water and living in a desert and I cannot understand why the store has not ordered water and the shelf's are 60% of the time the store shelves are empty?

It is not even worth shopping at Walmart anymore? I rather shop at the local stores where they order and they have the merchandise on their shelves instead of wasting my time and gas trying to buy stuff at Walmart and being disappointed when the shelves continue to stay empty and three times a week for the past month and the shelves are still all empty?