Bad Customer Service

We went into Krispy Kreme menlyn mall today to get refreshments for our menlyn store team and we got unnecessary attitude and bad service from the lady that was assisting us (Lizzy). We placed our order ,when she asked about the rewards app ,I then remembered that Krispy Kreme offers tenant discount . I then asked if I can also use the discount ,she rudely rep**** by saying “Now it means I need to start this transaction from scratch” & my colleague then rep**** by saying “We sorry we didn’t really know that we need to mention that when you started the transaction “. She then continued to give us attitude and I said to her that there’s no need to be irritated nor annoyed because her facial expressions showed that she’s irritated and she looked at the lady after us and did a smirk