This particular Walmart at south Phoenix is different from the rest, I don't know about you guys but this is the first time I came across a Walmart that is closed at midnight. Always thought they'll open 24/7. Came here with my family and try to grab a few things before heading home, not our local Walmart so not use to their set up, so I asked for assistance to help me locate the rest of what I needed, so I came to up to one of the employee and ask, they said give them a minute and they will come back and help me find it. Waited there for awhile and no return. Costumer service could be improve.