A customer went through the process of ordering her beverage and panini and I cashed her out. She then decided to buy a fancy cup and I asked her if she had the app so she could get points for the larger purchase (I should have asked her before her drink but I don’t always ask when we’re busy). She said she did and clicked on it, but it was obvious that she hadn’t actually signed up when she said it says “join now, what should I do next?” I told her to go through the process. She then asked if I could put her previous order on the app for points, I told her that the only way for me to do that was to void it and put the order through again, or to have her call customer service. She said “put it through again? so like I would get another drink?” I explained that, “no, she would only be paying for the same drink and sandwich she already had, I would just be voiding it and re-ringing it… she said “ohhhh okay!” I made sure she understood (or so I thought) and got the “okay” to do it. I completed the void, and handed her the receipt and as I am Re-ringing the order, her phone dings and she goes to her friend- “Oh no, what the heck?!! I’m gonna have to call my bank, something just got voided out of my account…I’m gonna have to check on that.”
And at first I thought she was joking, but I looked up and she was Dead serious. I said “ ma’am, that was supposed to happen, remember I just voided an order and resubmitted it.” And she looked Very dejected and confused, but said, “okay”. As I handed her the receipt for the void and explained that she should keep it to make sure it appears.

Two thoughts-
One: she will probably return and insist she was changed twice.
Two: I will Never be that helpful again. Screw the damn points! Dummies don’t deserve points.