My nightmare job

I spent 2 hours going from one Staples Business Depot to another (3 in total, across the city) in search of a purchase I had to make today. I've concluded that one job I can likely never do is work at Staples on a weekend. These poor people were BUSY, soooooooooo BUSY, that despite the fact that
a) their inventory didn't match their stock,
b) they put the wrong thing on hold for me at a store and I didn't find this out until driving 25 minutes to pick it up, and then
c) kept the new kid in training on hold on the phone for 20 minutes when he tried to call a third store to check if they had my item

I managed not to lose my cool with any of them. It wasn't even a conscious thing this time to stay nice. It was more out of just feeling awful for them, just thinking that, when this is done, I get to go home and they have to stay and help the perpetual line up of 35 people, all trying to return something without a receipt and asking complicated questions until closing time. Customer Service is a talent. Smiling at people who are treating you rudely, and feel they have a right to it, is a talent. I salute the staff at Staples, but I don't think I'll be going there on a Saturday again any time soon.