I made a purchase at Sam's through a trial membership. When I had to return an item at this store, I received the worst customer service ever. The girl wasted 40 minutes of my time messing around and then came back and rudely told me I couldn't return the item because I didn't have an actual membership even though the receipt I gave her plainly stated I could. That girl made the worst impression of the club for me. I will never join Sam's club.
A side note though, after a week, I took the same package to the store on the east side and, lo and behold, returned it with no problem. The customer service over there was very excellent, a complete opposite from the west store.