Loyalty programs can be a great way to keep customers coming back, which is why they are so popular.

When a customer asked this worker to look up her loyalty card by her phone number, she had to tell her that their cards don’t work like that.

Unfortunately, the crazy customer in this story would not have it and kept insisting that they could look it up by phone number, and just kept repeating herself until she left.

I’m not arguing with you, I’m just letting you know we don’t do that.

So, I work at a small family owned yogurt shop.

The owners are family friends, and I’ve been working for them on and off as needed since they opened 7 years ago.

Basically, I know the company in and out.

Loyalty cards are a great way to keep people coming back.

Anyways, we have loyalty cards we swipe for the customers to get money off future purchases.

They’re not attached to a name or number, we take no information from the customer, just give them a card with points on it.

Enter “I KNOW.” lady, or IKL for short. M will be me.

M: “Alright, do you have a rewards card?”

Sorry lady, these cards don’t work like that.

IKL: “Yeah, but not on me. Look it up with my phone number.”

M: “It wouldn’t be under a phone number, its just a physical card. We don’t take any customer information.”

IKL: “Uh, yeah, you do. I use my number every time I come in here.”

Sorry, you must be mistaken.

M: “No ma’am I’m sorry but that’s not something we’re able to do.”

IKL: “Well clearly you must of just stopped doing it because you’ve always done it.”

M: “It’s actually never been done. I worked here years ago as well and we never did it back then either.”

Why is she so upset about this?

IKL: “Uh, yes you did. Just because you worked here a couple years back doesn’t mean you know everything, because clearly you don’t know anything. Because I KNOW you did it. Unlike you, I KNOW. I’ve been coming here since you were a little girl so believe me, I KNOW.”

M: “Well, I’ve actually worked here on and off since we opened. We really have never done that. We don’t take your information when we give you the card.”

This lady is going crazy!

IKL: “YOU’RE LYING TO ME. I’ve been coming here since you were a CHILD! TRUST ME! You just don’t know what you’re talking about! So, before you argue with a customer, maybe you should get your facts straight!”

M: “I’m not arguing with you ma’am, I’m just telling you we don’t do that and never have.”

This lady is the only one arguing here.

IKL: “STOP ARGUING! I know what I’m talking about! I KNOW! Trust me, I KNOW! So don’t try and argue because you don’t know! You don’t know anything!”

M: “We really don’t do that, but alright. That’ll be $x.xx.”

Whatever you say lady.

IKL: “Oh yeah, sure. Right. Like you would know. Trust me I know what I’m talking about. I KNOW. I know, okay? So just stop. I know. I just KNOW. You’ve always done that. I KNOW YOU DO.”

Like a broken record, she seriously just kept repeating “I KNOW” in various ways. Over and over and over, the whole transaction.

M: “Ok well thank you have a good day.”

Of course you do lady.

IKL: “OH I WILL. AND BELIEVE ME, I KNOW WHAT I’M TALKING ABOUT. I. KNOW.”

With that, she stormed out. Okay lady, repeating yourself doesn’t make you any less wrong..

Some people just can’t handle being wrong, what a miserable life they must live.

Read on to see what the people in the comments say about it.

SHE KNOWS! SHE KNOWS!

Yeah, there are lots of shops.

This commenter is almost certainly correct.

Right? Make it make sense.

This person says the lady never worked in the service industry.

There is no shortage of crazy customers.

If you thought that was an interesting story, check this one out about a man who created a points system for his inheritance, and a family friend ends up getting almost all of it.