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It’s hard to help someone who refuses to listen.

One retail cashier found that out when a man came in to return a box of printer ink during a busy afternoon rush.

Rather than pulling up the full order, he showed her a blurry screenshot and started reading the order number out loud.

The problem was that one of the characters looked like it could be either a zero or the letter O. She asked him to double-check it, but he immediately insisted it was a zero and kept talking to her like she was the one making things difficult.

After the number failed more than once, she finally handed him the keyboard and let him try it himself.

Read on to see what happened next.

“Sir, that’s not a zero” and other things I didn’t think I’d have to say out loud at work

I work at a mid-sized retail chain that sells a bit of everything, but the front end is mostly returns, online pickups, and people insisting the app is “broken” because they can’t remember their own password.

This happened last weekend during the after-lunch rush, when the line is long and everyone is already annoyed at the concept of waiting.

A guy in his 50s comes up with a small box of fancy printer ink and slaps it on the counter like it personally offended him. He says he needs a refund because “it doesn’t fit,” and when I ask for the receipt, he proudly holds up his phone with a screenshot and says, “I have the code.”

Unfortunately, the text is blurry and cut off, so it’s hard to read.

Cool, no problem, except the screenshot is a blurry zoom of an order number where half the characters are cut off.

I ask if he can pull up the full email so I can scan the barcode, and he gets this wounded look like I’ve asked him to solve a math problem. He starts reading the number to me, very slowly, like I’m the one struggling.

It’s something like 8O1O7B, but he keeps saying, “eight zero one zero seven bee.”

I repeat it back and ask, “Is that an O or a zero?” and he snaps, “It’s a zero, obviously. It’s a number.”

The customer keeps insisting they are zeros.

I try it. System says invalid. I try it again, same.

He leans closer and says, louder, “ZERO. Like 0. Not a letter. Why would it be a letter?”

The line behind him is doing that shuffle where people pretend they aren’t listening, but they are, totally.

I keep my voice calm and say, “Sometimes order codes have letters. Can you tap the order and show me the barcode?”

She tried to save him from further embarrassment, but it didn’t work.

He sighs like I’m wasting his valuable time, then scrolls dramatically and shows me the same screenshot again, just bigger now.

That’s when I see it clearly: it’s not a zero, it’s the letter O, twice, and the font just makes it look round.

I point at it and say, as gently as I can, “I think those are O’s, not zeros.”

He goes red and says, “No. I typed it. I know what I typed.”

Finally, she turned the keyboard so he could try himself.

So I do the only thing that works with this type of customer. I turn my screen slightly and say, “Okay, can you type it in for me then?”

I hand him the scanner keyboard, and he pecks at it like it’s contaminated, still muttering. He types 80107B with zeros, hits enter, invalid.

He stares at it, then at me, then at his phone like it betrayed him.

I don’t say anything. I just wait, because sometimes silence is the safest customer service tool.

And he just couldn’t let it go.

He squints at his screenshot again, and I watch his brain do the slow, painful recalculation.

Finally, he says, very quietly, “Fine. Put O.”

I type it with O’s, it pulls up instantly, and of course the return goes through.

Instead of being relieved, he pivots straight into blaming our system, saying we should “make it clearer” and “not use confusing fonts” because it’s “basically a trick.”

At least it ended with a good laugh.

I just nodded and said, “I’ll pass that along,” because what else do you do?

When I handed him the refund slip, he snatched it and then, right before walking away, he said, not looking at me, “You could’ve told me sooner.”

Like I didn’t try. Like I wasn’t telling him the entire time.

The next person in line stepped up and whispered, “For what it’s worth, it was totally an O,” and I laughed a little harder than I meant to.’

Wow! That was a lot for such a simple fix.

Let’s take a look at what the readers over at Reddit think about their interaction.

This is actually pretty common.

Here’s a very valid point.

It really is their fault.

If you enjoyed this story, check out this post about an employee who cleverly shuts down customer arguments about closing time.

Exactly. He took the harder road.

Talk about making something harder than it needed to be.

After the code didn’t work the first time, the best thing would’ve been to try the letter.

Instead, the customer just couldn’t admit that he was wrong.

Next time, she should just try what she thinks it is and not even tell the customer. If it works, it’ll save time and prevent stress.