<human>: First time poster long time lurker and I finally decided to get an account. I figure I should post something small. 

I work in a department store in Canada (think stripes) and we have a rewards card. For some reason our security team wants us to make gift cards with people's points instead of redeeming them at the end of a transaction. 
This means that if I scan in your items and you want to redeem your points I would have to void the transaction, check your points, and if you have enough, make a gift card, then scan all items again. 

Typically we won't do that and the customer will either dismiss it or we would just deduct it at the end.

Today I had a particularly shit day and I was ringing through a lady and just put in her scratch and save manually on each item. After all this she goes, "Oh! I think I have points to use." 

So I smile and I say my that's no big deal, next time if you could just ask before so she knows the next time she has points. 

"Well shouldn't you have asked at the beginning?" 

Now on top of my shit mood this just irked me the wrong way. I just smiled instead of explaining that not everyone collects points and I'm not checking every card before hand because that is a whole separate transaction. 

My revenge? Instead of just attempting to deduct points at the end I voided everything. Then I checked her points (a whole new transaction AND she didn't have enough). And then I had to scan in her items but, whoops, the scanner isn't working. Let me slowly type in each sku and woops messed up let me try again!

Give me the gist of the text in a nutshell
<bot>: Customer wants to redeem points she doesn't have at the end of transaction. Watch me slow everything down for you.