Complain about how to punish hotel front desk staff for arbitrary charges.

1. Know the hotel's charging standard in advance: Before booking a hotel, you can know the hotel's charging standard in advance and confirm whether it includes all the expenses.

2. Keep the charge details: During the check-in, the front desk staff can be required to provide the charge details and keep the relevant receipts and invoices. Pay attention to checking the bill: when you check out the bill, you can check it carefully to confirm whether there are unreasonable expenses.