Sam's Club

I understand that the carts are not always available. I have back issues and try to get a cart when I shop at Sam's. Sometimes I have to walk to the exit side to get a cart as they are there charging instead of the entrance side.The issue I have is there is always 1 0r 2 carts that are not working and parked by a fence . They have been there for awhile and used for putting paper towels into the basket. How long does it take to get these repaired ?