I had another lame customer move down at my store. There are three stores within our company (Old Navy, Gap, Banana Republic). This lady comes in with Gap giftcards and she wants to use them at my store, which is not a Gap. I explain that while some giftcards are usable at all three stores, many are not so the best I could do for her would be to try the cards out. She gets all pissy and says it doesn't make sense and yadda yadda. I tell her that while we are owned by the same company, that we are our own branch and if she bought the cards at Gap that we were not getting paid for the merchandise. She goes on a tirade about the company being full of liars. So, I get pissed and say this: "Well, Kraft Foods is mostly owned by the company that owns Marlboro cigarettes. If you have a Kraft Foods gift card, should you be able to buy cigarettes with it?" Of course she replies "no," then pauses and her jaw drops. She finally lets me test the giftcards and they work. All that could have been avoided if she hadn't been so bent on screaming at me.
Then we were at Walmart the other day to fix my sister's tire, so of course I go to the fish department. I see a guy with his girlfriend and they're looking at tiny tiger barbs. They wanted like eight of them. I had to interject, just couldn't help it. I asked what size tank they had and they said it was just a fishbowl. Yeah. I told them that they couldn't even have one goldfish and they wouldn't believe me. So, I just told them I was a marine biology student and that I guaranteed anything they put in that bowl would die and the fishbowls should be illegal. The girl got this horrified look on her face and was all "let's just get some guppies." They did ask me what they would need for the guppies, and I showed them a tiny heater, some food, and other things but they didn't take any of it.
Part of the reason you see so many rude customers in the auto repair field is sadly that there are many mechanics who take advantage of customers, and everyone knows it. Diagnosing a car takes time, but when some shops charge upward of $45 per hour, it runs up into a lot of money fast and the real problem hasn't even been seen to at that point.
Granted not all shops are like this. A close friend of our family owns a shop and he won't charge just to look at a car. But, if he has to take off even the radiator cap or pull the dipstick, he'll charge you a full hour of work. I think that's ridiculous. I know mechanics can't work for free, but there has to be a happy medium somewhere.