Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: The cashier checked out my items at the supermarket. Sentence 2: He charged me the full price for several items that were on sale. Sentence 3: I tried to remind him that the items were discounted at 50%. Sentence 4: However, he didn't believe me. Sentence 5: We ended up fighting for several minutes.

Rude Cashiers