Sometimes, overpayments are the most embarrassing, and underpayments are the most embarrassing.
As a guest, I requested a final bill before checking out. As a result, when I checked out at the airport, I was informed that I was underpaid. This made me feel uncomfortable, as if I hadn't paid, even though I had already requested it in the desert because the bill was totaled before check out. Please be more careful in calculating the bill. It's a shame, even though I've been a long-time customer at this hotel, I'm still treated like a new customer.