You might need to train your employees on how to provide proper customer service.
We had a young cashier helping us. She was inquiring with the other person working with her on how to ring up the 8 PM special. This nasty girl with missing teeth had the worst attitude I've seen in a long time. Not only was she not helpful with her coworker, she was slamming things, rolling her eyes at the customers, and speaking to everybody in line with the most disrespectful tone.
Though we paid for our treats, we ended up throwing them out. This toothless girl's attitude left a bad taste.