Could you hand me the change?
Is what I should've said. Between me and the customers is a 1 1/2 foot counter, plus a 9" platform for the card swiper to sit on. There's a crack between the counter and platform. It's really the only place they can put something down, and I have wearily come to understand that many, many people can't count change in their hands, so they need to set it down there to count it out. OK, I can live with that. But how hard is it, after I confirm that the change I see is correct, to hand it to me instead of making me move a sign and reach over my handscanner to get it? This guy expected me to lean over and pick up $2.40 all in coin. This kind of stuff makes my neck hurt. So I said to him that I couldn't reach it because leaning over is bad for my neck* and he didn't hear or didn't care or was thinking slow, so I walked all the way around the counter to get it, which made him look like a jerk. I felt kind of bad because he said thank you, and not in a sarcastic way at all, and I realized he just didn't realize it was rude, and now I think he sensed I was mad. So I did not handle that well.
*I shouldn't have to explain myself, but I'm working on trying to communicate more, rather than silently fuming. I was halfway successful this time.